Add production dependencies & build

There are no code changes, this merely updates the README and therefore the Marketplace description

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,29 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: "[BUG] "
+labels: bug
+assignees: SaschaMann
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Workflow file to reproduce the behavior:
+
+```yaml
+
+```
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots/Build logs**
+If applicable, add screenshots to help explain your problem.
+
+If possible, set the repo secret `ACTIONS_STEP_DEBUG` to `true` to [enable debug logs](https://github.com/actions/toolkit/blob/master/docs/action-debugging.md#how-to-access-step-debug-logs) and run the build again for more detailled logs.
+
+**Additional context**
+Add any other context about the problem here.

.github/workflows/example-builds-nightly.yml

@@ -0,0 +1,37 @@
+name: Example builds (nightly)
+
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: '37 17 * * *'
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        julia-arch: [x64, x86]
+        os: [ubuntu-latest, macOS-latest, windows-latest]
+        # 32-bit Julia binaries are not available on macOS
+        exclude:
+          - os: macOS-latest
+            julia-arch: x86
+    
+    steps:
+      - uses: actions/checkout@v1.0.0
+      
+      - name: "Install dependencies"
+        run: |
+          npm install
+          npm run build
+          npm run pack
+
+      - name: "Set up Julia (nightly)"
+        uses: ./
+        with:
+          version: nightly
+          arch: ${{ matrix.julia-arch }}
+          show-versioninfo: 'true'
+      - run: julia --version

.github/workflows/example-builds.yml

@@ -0,0 +1,35 @@
+name: Example builds
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        julia-version: ['1.0.5', '1', '^1.5.0-beta1']
+        julia-arch: [x64, x86]
+        os: [ubuntu-latest, macOS-latest, windows-latest]
+        # 32-bit Julia binaries are not available on macOS
+        exclude:
+          - os: macOS-latest
+            julia-arch: x86
+    
+    steps:
+      - uses: actions/checkout@v1.0.0
+
+      - name: "Install dependencies"
+        run: |
+          npm install
+          npm run build
+          npm run pack
+
+      - name: "Set up Julia"
+        id: setup-julia
+        uses: ./
+        with:
+          version: ${{ matrix.julia-version }}
+          arch: ${{ matrix.julia-arch }}
+          show-versioninfo: 'true'
+      - run: julia --version

.gitignore

@@ -1,2 +1,3 @@
 node_modules/
 __tests__/runner/*
+!dist/

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "bin"]
+	path = bin
+	url = git@github.com:julia-actions/bin.git

CONTRIBUTING.md

@@ -0,0 +1,11 @@
+# Dev docs / Contributing guide
+
+## Building and tagging a release (requires write access)
+
+1. Test your changes, merge into `master`.
+2. Checkout `master`.
+3. Bump the version number in [`package.json`](package.json).
+4. Run `./bin/build-release julia-actions/setup-julia` to create a release branch and build a release.
+5. Push the branch (**without tags**) and verify that CI is passing on it.
+6. Run `git push --tags --force` to update the tags.
+7. Create a release for the `vX.Y.Z` tag.

README.md

@@ -11,8 +11,8 @@ This action sets up a Julia environment for use in actions by downloading a spec
   - [Julia Versions](#julia-versions)
   - [Matrix Testing](#matrix-testing)
 - [Versioning](#versioning)
-- [Future plans & ideas](#future-plans--ideas)
-- [Licence info](#licence-info)
+- [Debug logs](#debug-logs)
+- [Third party information](#third-party-information)
 
 ## Usage
 
@@ -25,7 +25,7 @@ You can find a list of example workflows making use of this action here: [julia-
 ```yaml
 steps:
 - uses: actions/checkout@v1.0.0
-- uses: julia-actions/setup-julia@v0.2
+- uses: julia-actions/setup-julia@v1
   with:
     version: 1.0.4
 - run: julia -e 'println("Hello, World!")'
@@ -40,17 +40,21 @@ You can either specify specific Julia versions or version ranges. If you specify
 #### Examples
 
 - `1.2.0` is a valid semver version. The action will try to download exactly this version. If it's not available, the build step will fail.
-- `1.0` is a version range that will match the highest available Julia version that starts with `1.0`, e.g. `1.0.5`.
-- `^1.3.0-rc1` is a caret version range that includes preleases. It matches all versions `≥ 1.3.0-rc1` and `< 1.4.0`.
+- `1.0` is a version range that will match the highest available Julia version that starts with `1.0`, e.g. `1.0.5`, excluding pre-releases.
+- `^1.3.0-rc1` is a **caret** version range that includes pre-releases starting at `rc1`. It matches all versions `≥ 1.3.0-rc1` and `< 2.0.0`.
+- `~1.3.0-rc1` is a **tilde** version range that includes pre-releases starting at `rc1`. It matches all versions `≥ 1.3.0-rc1` and `< 1.4.0`.
+- `^1.3.0-0` is a **caret** version range that includes _all_ pre-releases. It matches all versions `≥ 1.3.0-` and `< 2.0.0`.
+- `~1.3.0-0` is a **tilde** version range that includes _all_ pre-releases. It matches all versions `≥ 1.3.0-` and `< 1.4.0`.
+- `nightly` will install the latest nightly build.
 
-Internally the action uses node's semver package to resolve version ranges. Its [documentation](https://github.com/npm/node-semver#advanced-range-syntax) contains more details on the version range syntax.
+Internally the action uses node's semver package to resolve version ranges. Its [documentation](https://github.com/npm/node-semver#advanced-range-syntax) contains more details on the version range syntax. You can test what version will be selected for a given input in this JavaScript [REPL](https://repl.it/@SaschaMann/setup-julia-version-logic).
 
-#### WARNING: Version ranges are experimental and potentially out of date
-
-Currently the list of available versions is hardcoded. You have to use the latest version of the action to be able to install the latest Julia versions. Once available we will use a list of versions provided on julialang.org.
+The available Julia versions are pulled from [`versions.json`](https://julialang-s3.julialang.org/bin/versions.json). This file is automatically updated once a day. Therefore it may take up to 24 hours until a newly released Julia version is available in the action.
 
 ### Matrix Testing
 
+`bash` is chosen as shell to enforce consistent behaviour across operating systems. [Other shells](https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions#using-a-specific-shell) are available but you may have to escape quotation marks or otherwise adjust the syntax.
+
 #### 64-bit Julia only
 
 ```yaml
@@ -65,10 +69,11 @@ jobs:
     steps:
       - uses: actions/checkout@v1.0.0
       - name: "Set up Julia"
-        uses: julia-actions/setup-julia@v0.2
+        uses: julia-actions/setup-julia@v1
         with:
           version: ${{ matrix.julia-version }}
       - run: julia -e 'println("Hello, World!")'
+        shell: bash
 ```
 
 #### 32-bit Julia
@@ -90,11 +95,12 @@ jobs:
     steps:
       - uses: actions/checkout@v1.0.0
       - name: "Set up Julia"
-        uses: julia-actions/setup-julia@v0.2
+        uses: julia-actions/setup-julia@v1
         with:
           version: ${{ matrix.julia-version }}
           arch: ${{ matrix.julia-arch }}
       - run: julia -e 'println("Hello, World!")'
+        shell: bash
 ```
 
 Alternatively, you can include specific version and OS combinations that will use 32-bit Julia:
@@ -116,10 +122,11 @@ jobs:
     steps:
       - uses: actions/checkout@v1.0.0
       - name: "Set up Julia"
-        uses: julia-actions/setup-julia@v0.2
+        uses: julia-actions/setup-julia@v1
         with:
           version: ${{ matrix.julia-version }}
       - run: julia -e 'println("Hello, World!")'
+        shell: bash
 ```
 
 ## Versioning
@@ -134,21 +141,22 @@ You can specify commits, branches or tags in your workflows as follows:
 
 ```yaml
 steps:
-  - uses: julia-actions/setup-julia@6ae948d # commit SHA
+  - uses: julia-actions/setup-julia@d26d1111976eae5f00db04f0515ab744ec9cd79e # commit SHA of the tagged 1.3.1 commit
   - uses: julia-actions/setup-julia@master  # branch
   - uses: julia-actions/setup-julia@latest  # latest version tag (may break existing workflows)
   - uses: julia-actions/setup-julia@v1      # major version tag
   - uses: julia-actions/setup-julia@v0.1.0  # specific version tag
 ```
 
-## Future plans & ideas
+If your workflow requires access to secrets, you should always pin it to a commit SHA instead of a tag.
+This will protect you in case a bad actor gains access to the setup-julia repo.
+You can find more information in [GitHub's security hardening guide](https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/security-hardening-for-github-actions#using-third-party-actions).
 
-In no particular order:
+## Debug logs
 
-* Check if a cached version of Julia is available instead of installing it everytime CI runs ([waiting on GitHub to add proper caching](https://twitter.com/natfriedman/status/1164210683979812869))
-* Add support for nightly Julia builds.
-* Add CI script that checks if tags have been updated on release.
-* Hash and signature checks.
+You can enable [Step Debug Logs](https://github.com/actions/toolkit/blob/main/docs/action-debugging.md#step-debug-logs) for more detailed logs.
+Note that when debug logs are enabled, a request will be sent to `https://httpbin.julialang.org/ip` and the runner's IP will be printed to the debug logs.
 
-## Licence info
-Parts of this software have been derived from the `setup-go` [action](https://github.com/actions/setup-go) and the [TypeScript Action Template](https://github.com/actions/typescript-action), both released by GitHub under the MIT licence.
+## Third party information
+Parts of this software have been derived from other open source software.
+See [THIRD_PARTY_NOTICE.md](THIRD_PARTY_NOTICE.md) for details.

THIRD_PARTY_NOTICE.md

@@ -0,0 +1,55 @@
+# Third Party Notices and Information
+
+Parts of this software have been derived from other open source software.
+Find their full licence information below.
+
+- [`setup-go` action](#setup-go-action)
+- [TypeScript Action Template](#typescript-action-template)
+
+## [`setup-go` action](https://github.com/actions/setup-go)
+
+> The MIT License (MIT)
+> 
+> Copyright (c) 2018 GitHub, Inc. and contributors
+> 
+> Permission is hereby granted, free of charge, to any person obtaining a copy
+> of this software and associated documentation files (the "Software"), to deal
+> in the Software without restriction, including without limitation the rights
+> to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+> copies of the Software, and to permit persons to whom the Software is
+> furnished to do so, subject to the following conditions:
+> 
+> The above copyright notice and this permission notice shall be included in
+> all copies or substantial portions of the Software.
+> 
+> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+> FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+> AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+> LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+> THE SOFTWARE.
+
+## [TypeScript Action Template](https://github.com/actions/typescript-action)
+
+> The MIT License (MIT)
+>
+> Copyright (c) 2018 GitHub, Inc. and contributors
+> 
+> Permission is hereby granted, free of charge, to any person obtaining a copy
+> of this software and associated documentation files (the "Software"), to deal
+> in the Software without restriction, including without limitation the rights
+> to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+> copies of the Software, and to permit persons to whom the Software is
+> furnished to do so, subject to the following conditions:
+> 
+> The above copyright notice and this permission notice shall be included in
+> all copies or substantial portions of the Software.
+> 
+> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+> FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+> AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+> LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+> THE SOFTWARE.

__tests__/installer.test.ts

@@ -0,0 +1,113 @@
+// The testing setup has been derived from the actions/setup-go@bc6edb5 action.
+// Check README.md for licence information.
+
+import * as path from 'path'
+
+import * as io from '@actions/io'
+
+import nock = require('nock')
+import * as semver from 'semver'
+
+const testVersions = [
+    '0.1.2',       '0.2.0',           '0.2.1',          '0.3.0',
+    '0.3.1',       '0.3.10',          '0.3.11',         '0.3.12',
+    '0.3.2',       '0.3.3',           '0.3.4',          '0.3.5',
+    '0.3.6',       '0.3.7',           '0.3.8',          '0.3.9',
+    '0.4.0',       '0.4.0-rc1',       '0.4.0-rc2',      '0.4.0-rc3',
+    '0.4.0-rc4',   '0.4.1',           '0.4.2',          '0.4.3',
+    '0.4.4',       '0.4.5',           '0.4.6',          '0.4.7',
+    '0.5.0',       '0.5.0-rc0',       '0.5.0-rc1',      '0.5.0-rc2',
+    '0.5.0-rc3',   '0.5.0-rc4',       '0.5.1',          '0.5.2',
+    '0.6.0',       '0.6.0-pre.alpha', '0.6.0-pre.beta', '0.6.0-rc1',
+    '0.6.0-rc2',   '0.6.0-rc3',       '0.6.1',          '0.6.2',
+    '0.6.3',       '0.6.4',           '0.7.0',          '0.7.0-alpha',
+    '0.7.0-beta',  '0.7.0-beta2',     '0.7.0-rc1',      '0.7.0-rc2',
+    '0.7.0-rc3',   '1.0.0',           '1.0.0-rc1',      '1.0.1',
+    '1.0.2',       '1.0.3',           '1.0.4',          '1.0.5',
+    '1.1.0',       '1.1.0-rc1',       '1.1.0-rc2',      '1.1.1',
+    '1.2.0',       '1.2.0-rc1',       '1.2.0-rc2',      '1.2.0-rc3',
+    '1.3.0-alpha', '1.3.0-rc1',       '1.3.0-rc2',      '1.3.0-rc3',
+    '1.3.0-rc4'
+]
+
+const toolDir = path.join(__dirname, 'runner', 'tools')
+const tempDir = path.join(__dirname, 'runner', 'temp')
+const fixtureDir = path.join(__dirname, 'fixtures')
+
+process.env['RUNNER_TOOL_CACHE'] = toolDir
+process.env['RUNNER_TEMP'] = tempDir
+
+import * as installer from '../src/installer'
+
+describe('version matching tests', () => {
+    describe('specific versions', () => {
+        it('Doesn\'t change the version when given a valid semver version', () => {
+            expect(installer.getJuliaVersion([], '1.0.5')).toEqual('1.0.5')
+            expect(installer.getJuliaVersion(['v1.0.5', 'v1.0.6'], '1.0.5')).toEqual('1.0.5')
+            expect(installer.getJuliaVersion(['v1.0.4', 'v1.0.5'], '1.0.5')).toEqual('1.0.5')
+            expect(installer.getJuliaVersion(['v1.0.4'], '1.0.5')).toEqual('1.0.5')
+            expect(installer.getJuliaVersion([], '1.3.0-alpha')).toEqual('1.3.0-alpha')
+            expect(installer.getJuliaVersion(['v1.2.0', 'v1.3.0-alpha', 'v1.3.0-rc1', 'v1.3.0'], '1.3.0-alpha')).toEqual('1.3.0-alpha')
+            expect(installer.getJuliaVersion([], '1.3.0-rc2')).toEqual('1.3.0-rc2')
+        })
+
+        it('Doesn\'t change the version when given `nightly`', () => {
+            expect(installer.getJuliaVersion([], 'nightly')).toEqual('nightly')
+            expect(installer.getJuliaVersion(testVersions, 'nightly')).toEqual('nightly')
+        })
+    })
+
+    describe('version ranges', () => {
+        it('Chooses the highest available version that matches the input', () => {
+            expect(installer.getJuliaVersion(testVersions, '1')).toEqual('1.2.0')
+            expect(installer.getJuliaVersion(testVersions, '1.0')).toEqual('1.0.5')
+            expect(installer.getJuliaVersion(testVersions, '^1.3.0-rc1')).toEqual('1.3.0-rc4')
+            expect(installer.getJuliaVersion(testVersions, '^1.2.0-rc1')).toEqual('1.2.0')
+        })
+    })
+
+    describe('node-semver behaviour', () => {
+        describe('Windows installer change', () => {
+            it('Correctly understands >1.4.0', () => {
+                expect(semver.gtr('1.4.0-rc1', '1.3', {includePrerelease: true})).toBeTruthy()
+                expect(semver.gtr('1.4.0-DEV', '1.3', {includePrerelease: true})).toBeTruthy()
+                expect(semver.gtr('1.3.1', '1.3', {includePrerelease: true})).toBeFalsy()
+                expect(semver.gtr('1.3.2-rc1', '1.3', {includePrerelease: true})).toBeFalsy()
+            })
+        })
+    })
+})
+
+describe('installer tests', () => {
+    beforeAll(async () => {
+        await io.rmRF(toolDir)
+        await io.rmRF(tempDir)
+    }, 100000)
+
+    afterAll(async () => {
+        try {
+            await io.rmRF(toolDir)
+            await io.rmRF(tempDir)
+        } catch {
+            console.log('Failed to remove test directories')
+        }
+    }, 100000)
+
+    describe('versions.json parsing', () => {
+        // Instead of downloading versions.json, use fixtures/versions.json
+        beforeEach(() => {
+            nock('https://julialang-s3.julialang.org').persist()
+                .get('/bin/versions.json')
+                .replyWithFile(200, path.join(fixtureDir, 'versions.json'))
+        })
+
+        afterEach(() => {
+            nock.cleanAll()
+            nock.enableNetConnect()
+        })
+
+        it('Extracts the list of available versions', async () => {
+            expect(await (await installer.getJuliaVersions(await installer.getJuliaVersionInfo())).sort()).toEqual(testVersions.sort())
+        })
+    })
+})

__tests__/main.test.ts

@@ -1,27 +0,0 @@
-import * as installer from '../src/installer'
-
-const testVersions = ['v1.3.0-rc4', 'v1.3.0-rc3', 'v1.3.0-rc2', 'v1.0.5', 'v1.2.0', 'v1.3.0-rc1', 'v1.2.0-rc3', 'v1.3.0-alpha', 'v1.2.0-rc2', 'v1.2.0-rc1', 'v1.1.1', 'v1.0.4', 'v1.1.0', 'v1.1.0-rc2', 'v1.1.0-rc1', 'v1.0.3', 'v1.0.2', 'v1.0.1', 'v1.0.0']
-
-describe('installer tests', () => {
-    describe('version matching', () => {
-        describe('specific versions', () => {
-            it('Doesn\'t change the version when given a valid semver version', async () => {
-                expect(await installer.getJuliaVersion([], '1.0.5')).toEqual('1.0.5')
-                expect(await installer.getJuliaVersion(['v1.0.5', 'v1.0.6'], '1.0.5')).toEqual('1.0.5')
-                expect(await installer.getJuliaVersion(['v1.0.4', 'v1.0.5'], '1.0.5')).toEqual('1.0.5')
-                expect(await installer.getJuliaVersion(['v1.0.4'], '1.0.5')).toEqual('1.0.5')
-                expect(await installer.getJuliaVersion([], '1.3.0-alpha')).toEqual('1.3.0-alpha')
-                expect(await installer.getJuliaVersion(['v1.2.0', 'v1.3.0-alpha', 'v1.3.0-rc1', 'v1.3.0'], '1.3.0-alpha')).toEqual('1.3.0-alpha')
-                expect(await installer.getJuliaVersion([], '1.3.0-rc2')).toEqual('1.3.0-rc2')
-            })
-        })
-        describe('version ranges', () => {
-            it('Chooses the highest available version that matches the input', async () => {
-                expect(await installer.getJuliaVersion(testVersions, '1')).toEqual('1.2.0')
-                expect(await installer.getJuliaVersion(testVersions, '1.0')).toEqual('1.0.5')
-                expect(await installer.getJuliaVersion(testVersions, '^1.3.0-rc1')).toEqual('1.3.0-rc4')
-                expect(await installer.getJuliaVersion(testVersions, '^1.2.0-rc1')).toEqual('1.2.0')
-            })
-        })
-    })
-})

action.yml

@@ -9,9 +9,16 @@ inputs:
     description: 'Architecture of the Julia binaries. Defaults to x64.'
     required: false
     default: 'x64'
+  show-versioninfo:
+    description: 'Display InteractiveUtils.versioninfo() after installing'
+    required: false
+    default: 'false'
+outputs:
+  julia-bindir:
+    description: 'Path to the directory containing the Julia executable. Equivalent to JULIA_BINDIR: https://docs.julialang.org/en/v1/manual/environment-variables/#JULIA_BINDIR'
 runs:
   using: 'node12'
-  main: 'lib/setup-julia.js'
+  main: 'dist/index.js'
 branding:
   icon: 'download'
   color: 'green'

bin/build-release

@@ -1,13 +0,0 @@
-#!/bin/sh
-
-git checkout -b releases/"$1"
-
-npm install
-npm run build
-npm test
-npm prune --production
-
-sed -i 's/node_modules/!node_modules/g' .gitignore
-git add node_modules
-git commit -a -m "Add production dependencies & build"
-git tag "$1"

docs/release-checklist.md

@@ -1,16 +0,0 @@
-# Release checklist
-
-Version: `1.b.c`
-
-- [ ] Create release branch `releases/v1.b.c`
-  - [ ] Unignore `node_modules/` by adding `!` in front in `.gitignore`
-  - [ ] Delete `node_modules/`
-  - [ ] Install production dependencies: `npm install --production`
-  - [ ] Add `node_modules/`: `git add node_modules`
-  - [ ] Commit & push action: `git commit -a -m "Publish v1.b.c."`, then `git push`
-- [ ] Test the action with an example package
-- [ ] Create tags
-  - [ ] `v1.b.c` pointing at the last commit in `releases/v1.b.c`
-  - [ ] `latest` pointing at the latest version of the highest major version
-  - [ ] `v1` pointing at the latest `1.x.x` version
-- [ ] Push tags

lib/installer.js

@@ -18,97 +18,167 @@ Object.defineProperty(exports, "__esModule", { value: true });
 const core = __importStar(require("@actions/core"));
 const exec = __importStar(require("@actions/exec"));
 const tc = __importStar(require("@actions/tool-cache"));
+const crypto = __importStar(require("crypto"));
+const fs = __importStar(require("fs"));
 const os = __importStar(require("os"));
 const path = __importStar(require("path"));
 const semver = __importStar(require("semver"));
+// Translations between actions input and Julia arch names
+const osMap = {
+    'win32': 'winnt',
+    'darwin': 'mac',
+    'linux': 'linux'
+};
+const archMap = {
+    'x86': 'i686',
+    'x64': 'x86_64'
+};
 // Store information about the environment
 const osPlat = os.platform(); // possible values: win32 (Windows), linux (Linux), darwin (macOS)
 core.debug(`platform: ${osPlat}`);
-// This is temporary until we have a better way of fetching releases (see #1, #4 for details)
-exports.juliaVersions = ['v1.3.0-rc5', 'v1.3.0-rc4', 'v1.3.0-rc3', 'v1.3.0-rc2', 'v1.0.5', 'v1.2.0', 'v1.3.0-rc1', 'v1.2.0-rc3', 'v1.3.0-alpha', 'v1.2.0-rc2', 'v1.2.0-rc1', 'v1.1.1', 'v1.0.4', 'v1.1.0', 'v1.1.0-rc2', 'v1.1.0-rc1', 'v1.0.3', 'v1.0.2', 'v1.0.1', 'v1.0.0', 'v0.7.0', 'v1.0.0-rc1', 'v0.7.0-rc3', 'v0.7.0-rc2', 'v0.7.0-rc1', 'v0.7.0-beta2', 'v0.6.4', 'v0.7.0-beta', 'v0.7.0-alpha', 'v0.6.3', 'v0.6.2', 'v0.6.1', 'v0.6.0', 'v0.6.0-rc3', 'v0.6.0-rc2', 'v0.5.2', 'v0.6.0-rc1', 'v0.6.0-pre.beta', 'v0.5.1', 'v0.6.0-pre.alpha', 'v0.5.0', 'v0.4.7', 'v0.5.0-rc4', 'v0.5.0-rc3', 'v0.5.0-rc2', 'v0.5.0-rc1', 'v0.5.0-rc0', 'v0.4.6', 'v0.4.5', 'v0.4.4', 'v0.4.3', 'v0.4.2', 'v0.4.1', 'v0.3.12', 'v0.4.0', 'v0.4.0-rc4', 'v0.4.0-rc3', 'v0.4.0-rc2', 'v0.4.0-rc1', 'v0.3.11', 'v0.3.10', 'v0.3.9', 'v0.3.8', 'v0.3.7', 'v0.3.6', 'v0.3.5', 'v0.3.4', 'v0.3.3', 'v0.3.2', 'v0.3.1', 'v0.3.0', 'v0.3.0-rc4', 'v0.3.0-rc3', 'v0.3.0-rc2', 'v0.3.0-rc1', 'v0.2.0-rc1', 'v0.2.0-rc3', 'v0.2.0-rc4', 'v0.2.0', 'v0.2.0-rc2'];
-function getJuliaVersion(availableReleases, versionInput) {
+/**
+ * @returns The SHA256 checksum of a given file.
+ */
+function calculateChecksum(file) {
     return __awaiter(this, void 0, void 0, function* () {
-        if (semver.valid(versionInput) == versionInput) {
-            // versionInput is a valid version, use it directly
-            return versionInput;
-        }
-        // Use the highest available version that matches versionInput
-        let version = semver.maxSatisfying(availableReleases, versionInput);
-        if (version == null) {
-            throw `Could not find a Julia version that matches ${versionInput}`;
-        }
-        // GitHub tags start with v, remove it
-        version = version.replace(/^v/, '');
-        return version;
+        const hash = crypto.createHash('sha256');
+        const input = fs.createReadStream(file);
+        return new Promise((resolve, reject) => {
+            input.on('data', (chunk) => {
+                hash.update(chunk);
+            });
+            input.on('end', () => {
+                const digest = hash.digest('hex');
+                digest ? resolve(digest) : reject(new Error(`Could not calculate checksum of file ${file}: digest was empty.`));
+            });
+        });
     });
 }
-exports.getJuliaVersion = getJuliaVersion;
-function getMajorMinorVersion(version) {
-    return version.split('.').slice(0, 2).join('.');
+/**
+ * @returns The content of the downloaded versions.json file as object.
+ */
+function getJuliaVersionInfo() {
+    return __awaiter(this, void 0, void 0, function* () {
+        const versionsFile = yield tc.downloadTool('https://julialang-s3.julialang.org/bin/versions.json');
+        return JSON.parse(fs.readFileSync(versionsFile).toString());
+    });
 }
-function getDownloadURL(version, arch) {
-    const baseURL = 'https://julialang-s3.julialang.org/bin';
-    let platform;
-    const versionDir = getMajorMinorVersion(version);
-    if (osPlat === 'win32') { // Windows
-        platform = 'winnt';
-    }
-    else if (osPlat === 'darwin') { // macOS
-        if (arch == 'x86') {
-            throw '32-bit Julia is not available on macOS';
+exports.getJuliaVersionInfo = getJuliaVersionInfo;
+/**
+ * @returns An array of all Julia versions available for download
+ */
+function getJuliaVersions(versionInfo) {
+    return __awaiter(this, void 0, void 0, function* () {
+        let versions = [];
+        for (let version in versionInfo) {
+            versions.push(version);
         }
-        platform = 'mac';
-    }
-    else if (osPlat === 'linux') { // Linux
-        platform = 'linux';
-    }
-    else {
-        throw `Platform ${osPlat} is not supported`;
-    }
-    return `${baseURL}/${platform}/${arch}/${versionDir}/${getFileName(version, arch)}`;
+        return versions;
+    });
 }
-function getFileName(version, arch) {
+exports.getJuliaVersions = getJuliaVersions;
+function getJuliaVersion(availableReleases, versionInput) {
+    if (semver.valid(versionInput) == versionInput) {
+        // versionInput is a valid version, use it directly
+        return versionInput;
+    }
+    // nightlies
+    if (versionInput == 'nightly') {
+        return 'nightly';
+    }
+    // Use the highest available version that matches versionInput
+    let version = semver.maxSatisfying(availableReleases, versionInput);
+    if (version == null) {
+        throw new Error(`Could not find a Julia version that matches ${versionInput}`);
+    }
+    // GitHub tags start with v, remove it
+    version = version.replace(/^v/, '');
+    return version;
+}
+exports.getJuliaVersion = getJuliaVersion;
+function getNightlyFileName(arch) {
     let versionExt, ext;
-    if (osPlat === 'win32') { // Windows
+    if (osPlat == 'win32') {
         versionExt = arch == 'x64' ? '-win64' : '-win32';
         ext = 'exe';
     }
-    else if (osPlat === 'darwin') { // macOS
+    else if (osPlat == 'darwin') {
         if (arch == 'x86') {
-            throw '32-bit Julia is not available on macOS';
+            throw new Error('32-bit Julia is not available on macOS');
         }
         versionExt = '-mac64';
         ext = 'dmg';
     }
-    else if (osPlat === 'linux') { // Linux
-        versionExt = arch == 'x64' ? '-linux-x86_64' : '-linux-i686';
+    else if (osPlat === 'linux') {
+        versionExt = arch == 'x64' ? '-linux64' : '-linux32';
         ext = 'tar.gz';
     }
     else {
-        throw `Platform ${osPlat} is not supported`;
+        throw new Error(`Platform ${osPlat} is not supported`);
     }
-    return `julia-${version}${versionExt}.${ext}`;
+    return `julia-latest${versionExt}.${ext}`;
 }
-function installJulia(version, arch) {
+function getFileInfo(versionInfo, version, arch) {
+    if (version == 'nightly') {
+        return null;
+    }
+    for (let file of versionInfo[version].files) {
+        if (file.os == osMap[osPlat] && file.arch == archMap[arch]) {
+            return file;
+        }
+    }
+    throw `Could not find ${archMap[arch]}/${version} binaries`;
+}
+exports.getFileInfo = getFileInfo;
+function getDownloadURL(fileInfo, version, arch) {
+    // nightlies
+    if (version == 'nightly') {
+        const baseURL = 'https://julialangnightlies-s3.julialang.org/bin';
+        return `${baseURL}/${osMap[osPlat]}/${arch}/${getNightlyFileName(arch)}`;
+    }
+    return fileInfo.url;
+}
+exports.getDownloadURL = getDownloadURL;
+function installJulia(versionInfo, version, arch) {
     return __awaiter(this, void 0, void 0, function* () {
         // Download Julia
-        const downloadURL = getDownloadURL(version, arch);
+        const fileInfo = getFileInfo(versionInfo, version, arch);
+        const downloadURL = getDownloadURL(fileInfo, version, arch);
         core.debug(`downloading Julia from ${downloadURL}`);
         const juliaDownloadPath = yield tc.downloadTool(downloadURL);
+        // Verify checksum
+        if (version != 'nightly') {
+            const checkSum = yield calculateChecksum(juliaDownloadPath);
+            if (fileInfo.sha256 != checkSum) {
+                throw new Error(`Checksum of downloaded file does not match the expected checksum from versions.json.\nExpected: ${fileInfo.sha256}\nGot: ${checkSum}`);
+            }
+            core.debug(`Checksum of downloaded file matches expected checksum: ${checkSum}`);
+        }
+        else {
+            core.debug('Skipping checksum check for nightly binaries.');
+        }
+        const tempInstallDir = fs.mkdtempSync(`julia-${arch}-${version}-`);
         // Install it
         switch (osPlat) {
             case 'linux':
-                const juliaExtractedFolder = yield tc.extractTar(juliaDownloadPath);
-                return path.join(juliaExtractedFolder, `julia-${version}`);
+                // tc.extractTar doesn't support stripping components, so we have to call tar manually
+                yield exec.exec('tar', ['xf', juliaDownloadPath, '--strip-components=1', '-C', tempInstallDir]);
+                return tempInstallDir;
             case 'win32':
-                const juliaInstallationPath = path.join('C:', 'Julia');
-                yield exec.exec('powershell', ['-Command', `Start-Process -FilePath ${juliaDownloadPath} -ArgumentList "/S /D=${juliaInstallationPath}" -NoNewWindow -Wait`]);
-                return juliaInstallationPath;
+                if (version == 'nightly' || semver.gtr(version, '1.3', { includePrerelease: true })) {
+                    // The installer changed in 1.4: https://github.com/JuliaLang/julia/blob/ef0c9108b12f3ae177c51037934351ffa703b0b5/NEWS.md#build-system-changes
+                    yield exec.exec('powershell', ['-Command', `Start-Process -FilePath ${juliaDownloadPath} -ArgumentList "/SILENT /dir=${path.join(process.cwd(), tempInstallDir)}" -NoNewWindow -Wait`]);
+                }
+                else {
+                    yield exec.exec('powershell', ['-Command', `Start-Process -FilePath ${juliaDownloadPath} -ArgumentList "/S /D=${path.join(process.cwd(), tempInstallDir)}" -NoNewWindow -Wait`]);
+                }
+                return tempInstallDir;
             case 'darwin':
                 yield exec.exec('hdiutil', ['attach', juliaDownloadPath]);
-                return `/Volumes/Julia-${version}/Julia-${getMajorMinorVersion(version)}.app/Contents/Resources/julia`;
+                yield exec.exec('/bin/bash', ['-c', `cp -a /Volumes/Julia-*/Julia-*.app/Contents/Resources/julia ${tempInstallDir}`]);
+                return path.join(tempInstallDir, 'julia');
             default:
-                throw `Platform ${osPlat} is not supported`;
+                throw new Error(`Platform ${osPlat} is not supported`);
         }
     });
 }

lib/setup-julia.js

@@ -18,33 +18,71 @@ Object.defineProperty(exports, "__esModule", { value: true });
 const core = __importStar(require("@actions/core"));
 const exec = __importStar(require("@actions/exec"));
 const tc = __importStar(require("@actions/tool-cache"));
+const fs = __importStar(require("fs"));
+const https = __importStar(require("https"));
 const path = __importStar(require("path"));
 const installer = __importStar(require("./installer"));
 function run() {
     return __awaiter(this, void 0, void 0, function* () {
         try {
+            // Debugging info
+            if (core.isDebug()) {
+                // Log Runner IP Address
+                https.get('https://httpbin.julialang.org/ip', resp => {
+                    let data = '';
+                    resp.on('data', chunk => {
+                        data += chunk;
+                    });
+                    resp.on('end', () => {
+                        core.debug(`Runner IP address: ${JSON.parse(data).origin}`);
+                    });
+                }).on('error', err => {
+                    core.debug(`ERROR: Could not retrieve runner IP: ${err}`);
+                });
+            }
+            // Inputs
             const versionInput = core.getInput('version');
             const arch = core.getInput('arch');
-            const availableReleases = installer.juliaVersions;
-            const version = yield installer.getJuliaVersion(availableReleases, versionInput);
+            // It can easily happen that, for example, a workflow file contains an input `version: ${{ matrix.julia-version }}`
+            // while the strategy matrix only contains a key `${{ matrix.version }}`.
+            // In that case, we want the action to fail, rather than trying to download julia from an URL that's missing parts and 404ing.
+            // We _could_ fall back to the default but that means that builds silently do things differently than they're meant to, which
+            // is worse than failing the build.
+            if (!versionInput) {
+                throw new Error('Version input must not be null');
+            }
+            if (!arch) {
+                throw new Error(`Arch input must not be null`);
+            }
+            const versionInfo = yield installer.getJuliaVersionInfo();
+            const availableReleases = yield installer.getJuliaVersions(versionInfo);
+            const version = installer.getJuliaVersion(availableReleases, versionInput);
             core.debug(`selected Julia version: ${arch}/${version}`);
             // Search in cache
             let juliaPath;
             juliaPath = tc.find('julia', version, arch);
             if (!juliaPath) {
-                core.debug(`could not find Julia ${version} in cache`);
-                const juliaInstallationPath = yield installer.installJulia(version, arch);
+                core.debug(`could not find Julia ${arch}/${version} in cache`);
+                const juliaInstallationPath = yield installer.installJulia(versionInfo, version, arch);
                 // Add it to cache
                 juliaPath = yield tc.cacheDir(juliaInstallationPath, 'julia', version, arch);
                 core.debug(`added Julia to cache: ${juliaPath}`);
+                // Remove temporary dir
+                fs.rmdirSync(juliaInstallationPath, { recursive: true });
             }
             else {
                 core.debug(`using cached version of Julia: ${juliaPath}`);
             }
             // Add it to PATH
             core.addPath(path.join(juliaPath, 'bin'));
-            // Test if Julia has been installed by showing versioninfo()
-            yield exec.exec('julia', ['-e', 'using InteractiveUtils; versioninfo()']);
+            // Set output
+            core.setOutput('julia-bindir', path.join(juliaPath, 'bin'));
+            // Test if Julia has been installed
+            exec.exec('julia', ['--version']);
+            // If enabled, also show the full version info
+            if (core.getInput('show-versioninfo') == 'true') {
+                exec.exec('julia', ['-e', 'using InteractiveUtils; versioninfo()']);
+            }
         }
         catch (error) {
             core.setFailed(error.message);

package.json

@@ -1,13 +1,12 @@
 {
   "name": "setup-julia",
-  "version": "0.1.0",
+  "version": "1.4.1",
   "private": true,
   "description": "setup Julia action",
   "main": "lib/setup-julia.js",
   "scripts": {
     "build": "tsc",
-    "format": "prettier --single-quote --print-width 120 --tab-width 4 --no-semi --write **/*.ts",
-    "format-check": "prettier  --single-quote --print-width 120 --tab-width 4 --no-semi --check **/*.ts",
+    "pack": "ncc build",
     "test": "jest"
   },
   "repository": {
@@ -22,9 +21,8 @@
   "author": "Sascha Mann <git@mail.saschamann.eu>",
   "license": "MIT",
   "dependencies": {
-    "@actions/core": "^1.0.0",
+    "@actions/core": "^1.2.6",
     "@actions/exec": "^1.0.0",
-    "@actions/github": "^1.0.0",
     "@actions/io": "^1.0.0",
     "@actions/tool-cache": "^1.0.0",
     "semver": "^6.3.0"
@@ -33,10 +31,12 @@
     "@types/jest": "^24.0.13",
     "@types/node": "^12.12.7",
     "@types/semver": "^6.0.0",
+    "@zeit/ncc": "^0.22.0",
     "jest": "^24.8.0",
     "jest-circus": "^24.7.1",
+    "nock": "^11.7.2",
     "prettier": "^1.17.1",
-    "ts-jest": "^24.0.2",
+    "ts-jest": "^26.0.0",
     "typescript": "^3.5.1"
   }
 }

src/installer.ts

@@ -2,29 +2,84 @@ import * as core from '@actions/core'
 import * as exec from '@actions/exec'
 import * as tc from '@actions/tool-cache'
 
-import * as https from 'https'
+import * as crypto from 'crypto'
+import * as fs from 'fs'
 import * as os from 'os'
 import * as path from 'path'
 
 import * as semver from 'semver'
 
+// Translations between actions input and Julia arch names
+const osMap = {
+    'win32': 'winnt',
+    'darwin': 'mac',
+    'linux': 'linux'
+}
+const archMap = {
+    'x86': 'i686',
+    'x64': 'x86_64'
+}
+
 // Store information about the environment
 const osPlat = os.platform() // possible values: win32 (Windows), linux (Linux), darwin (macOS)
 core.debug(`platform: ${osPlat}`)
 
-// This is temporary until we have a better way of fetching releases (see #1, #4 for details)
-export const juliaVersions = ['v1.3.0-rc5', 'v1.3.0-rc4', 'v1.3.0-rc3', 'v1.3.0-rc2', 'v1.0.5', 'v1.2.0', 'v1.3.0-rc1', 'v1.2.0-rc3', 'v1.3.0-alpha', 'v1.2.0-rc2', 'v1.2.0-rc1', 'v1.1.1', 'v1.0.4', 'v1.1.0', 'v1.1.0-rc2', 'v1.1.0-rc1', 'v1.0.3', 'v1.0.2', 'v1.0.1', 'v1.0.0', 'v0.7.0', 'v1.0.0-rc1', 'v0.7.0-rc3', 'v0.7.0-rc2', 'v0.7.0-rc1', 'v0.7.0-beta2', 'v0.6.4', 'v0.7.0-beta', 'v0.7.0-alpha', 'v0.6.3', 'v0.6.2', 'v0.6.1', 'v0.6.0', 'v0.6.0-rc3', 'v0.6.0-rc2', 'v0.5.2', 'v0.6.0-rc1', 'v0.6.0-pre.beta', 'v0.5.1', 'v0.6.0-pre.alpha', 'v0.5.0', 'v0.4.7', 'v0.5.0-rc4', 'v0.5.0-rc3', 'v0.5.0-rc2', 'v0.5.0-rc1', 'v0.5.0-rc0', 'v0.4.6', 'v0.4.5', 'v0.4.4', 'v0.4.3', 'v0.4.2', 'v0.4.1', 'v0.3.12', 'v0.4.0', 'v0.4.0-rc4', 'v0.4.0-rc3', 'v0.4.0-rc2', 'v0.4.0-rc1', 'v0.3.11', 'v0.3.10', 'v0.3.9', 'v0.3.8', 'v0.3.7', 'v0.3.6', 'v0.3.5', 'v0.3.4', 'v0.3.3', 'v0.3.2', 'v0.3.1', 'v0.3.0', 'v0.3.0-rc4', 'v0.3.0-rc3', 'v0.3.0-rc2', 'v0.3.0-rc1', 'v0.2.0-rc1', 'v0.2.0-rc3', 'v0.2.0-rc4', 'v0.2.0', 'v0.2.0-rc2']
+/**
+ * @returns The SHA256 checksum of a given file.
+ */
+async function calculateChecksum(file: string): Promise<string> {
+    const hash = crypto.createHash('sha256')
+    const input = fs.createReadStream(file)
 
-export async function getJuliaVersion(availableReleases: string[], versionInput: string): Promise<string> {
+    return new Promise((resolve, reject) => {
+        input.on('data', (chunk) => {
+            hash.update(chunk)
+        })
+
+        input.on('end', () => {
+            const digest = hash.digest('hex')
+            digest ? resolve(digest) : reject(new Error(`Could not calculate checksum of file ${file}: digest was empty.`))
+        })
+    })
+}
+
+/**
+ * @returns The content of the downloaded versions.json file as object.
+ */
+export async function getJuliaVersionInfo(): Promise<object> {
+    const versionsFile = await tc.downloadTool('https://julialang-s3.julialang.org/bin/versions.json')
+
+    return JSON.parse(fs.readFileSync(versionsFile).toString())
+}
+
+/**
+ * @returns An array of all Julia versions available for download
+ */
+export async function getJuliaVersions(versionInfo): Promise<string[]> {
+    let versions: string[] = []
+
+    for (let version in versionInfo) {
+        versions.push(version)
+    }
+
+    return versions
+}
+
+export function getJuliaVersion(availableReleases: string[], versionInput: string): string {
     if (semver.valid(versionInput) == versionInput) {
         // versionInput is a valid version, use it directly
         return versionInput
     }
 
+    // nightlies
+    if (versionInput == 'nightly') {
+        return 'nightly'
+    }
+
     // Use the highest available version that matches versionInput
     let version = semver.maxSatisfying(availableReleases, versionInput)
     if (version == null) {
-        throw `Could not find a Julia version that matches ${versionInput}`
+        throw new Error(`Could not find a Julia version that matches ${versionInput}`)
     }
 
     // GitHub tags start with v, remove it
@@ -33,72 +88,91 @@ export async function getJuliaVersion(availableReleases: string[], versionInput:
     return version
 }
 
-function getMajorMinorVersion(version: string): string {
-    return version.split('.').slice(0, 2).join('.')
-}
-
-function getDownloadURL(version: string, arch: string): string {
-    const baseURL = 'https://julialang-s3.julialang.org/bin'
-    let platform: string
-    const versionDir = getMajorMinorVersion(version)
-
-    if (osPlat === 'win32') { // Windows
-        platform = 'winnt'
-    } else if (osPlat === 'darwin') { // macOS
-        if (arch == 'x86') {
-            throw '32-bit Julia is not available on macOS'
-        }
-        platform = 'mac'
-    } else if (osPlat === 'linux') { // Linux
-        platform = 'linux'
-    } else {
-        throw `Platform ${osPlat} is not supported`
-    }
-
-    return `${baseURL}/${platform}/${arch}/${versionDir}/${getFileName(version, arch)}`
-}
-
-function getFileName(version: string, arch: string): string {
+function getNightlyFileName(arch: string): string {
     let versionExt: string, ext: string
 
-    if (osPlat === 'win32') { // Windows
+    if (osPlat == 'win32') {
         versionExt = arch == 'x64' ? '-win64' : '-win32'
         ext = 'exe'
-    } else if (osPlat === 'darwin') { // macOS
+    } else if (osPlat == 'darwin') {
         if (arch == 'x86') {
-            throw '32-bit Julia is not available on macOS'
+            throw new Error('32-bit Julia is not available on macOS')
         }
         versionExt = '-mac64'
         ext = 'dmg'
-    } else if (osPlat === 'linux') { // Linux
-        versionExt = arch == 'x64' ? '-linux-x86_64' : '-linux-i686'
+    } else if (osPlat === 'linux') {
+        versionExt = arch == 'x64' ? '-linux64' : '-linux32'
         ext = 'tar.gz'
     } else {
-        throw `Platform ${osPlat} is not supported`
+        throw new Error(`Platform ${osPlat} is not supported`)
     }
 
-    return `julia-${version}${versionExt}.${ext}`
+    return `julia-latest${versionExt}.${ext}`
 }
 
-export async function installJulia(version: string, arch: string): Promise<string> {
+export function getFileInfo(versionInfo, version: string, arch: string) {
+    if (version == 'nightly') {
+        return null
+    }
+
+    for (let file of versionInfo[version].files) {
+        if (file.os == osMap[osPlat] && file.arch == archMap[arch]) {
+            return file
+        }
+    }
+
+    throw `Could not find ${archMap[arch]}/${version} binaries`
+}
+
+export function getDownloadURL(fileInfo, version: string, arch: string): string {
+    // nightlies
+    if (version == 'nightly') {
+        const baseURL = 'https://julialangnightlies-s3.julialang.org/bin'
+        return `${baseURL}/${osMap[osPlat]}/${arch}/${getNightlyFileName(arch)}`
+    }
+
+    return fileInfo.url
+}
+
+export async function installJulia(versionInfo, version: string, arch: string): Promise<string> {
     // Download Julia
-    const downloadURL = getDownloadURL(version, arch)
+    const fileInfo = getFileInfo(versionInfo, version, arch)
+    const downloadURL = getDownloadURL(fileInfo, version, arch)
     core.debug(`downloading Julia from ${downloadURL}`)
     const juliaDownloadPath = await tc.downloadTool(downloadURL)
 
+    // Verify checksum
+    if (version != 'nightly') {
+        const checkSum = await calculateChecksum(juliaDownloadPath)
+        if (fileInfo.sha256 != checkSum) {
+            throw new Error(`Checksum of downloaded file does not match the expected checksum from versions.json.\nExpected: ${fileInfo.sha256}\nGot: ${checkSum}`)
+        }
+        core.debug(`Checksum of downloaded file matches expected checksum: ${checkSum}`)
+    } else {
+        core.debug('Skipping checksum check for nightly binaries.')
+    }
+
+    const tempInstallDir = fs.mkdtempSync(`julia-${arch}-${version}-`)
+
     // Install it
     switch (osPlat) {
         case 'linux':
-            const juliaExtractedFolder = await tc.extractTar(juliaDownloadPath)
-            return path.join(juliaExtractedFolder, `julia-${version}`)
+            // tc.extractTar doesn't support stripping components, so we have to call tar manually
+            await exec.exec('tar', ['xf', juliaDownloadPath, '--strip-components=1', '-C', tempInstallDir])
+            return tempInstallDir
         case 'win32':
-            const juliaInstallationPath = path.join('C:', 'Julia')
-            await exec.exec('powershell', ['-Command', `Start-Process -FilePath ${juliaDownloadPath} -ArgumentList "/S /D=${juliaInstallationPath}" -NoNewWindow -Wait`])
-            return juliaInstallationPath
+            if (version == 'nightly' || semver.gtr(version, '1.3', {includePrerelease: true})) {
+                // The installer changed in 1.4: https://github.com/JuliaLang/julia/blob/ef0c9108b12f3ae177c51037934351ffa703b0b5/NEWS.md#build-system-changes
+                await exec.exec('powershell', ['-Command', `Start-Process -FilePath ${juliaDownloadPath} -ArgumentList "/SILENT /dir=${path.join(process.cwd(), tempInstallDir)}" -NoNewWindow -Wait`])
+            } else {
+                await exec.exec('powershell', ['-Command', `Start-Process -FilePath ${juliaDownloadPath} -ArgumentList "/S /D=${path.join(process.cwd(), tempInstallDir)}" -NoNewWindow -Wait`])
+            }
+            return tempInstallDir
         case 'darwin':
             await exec.exec('hdiutil', ['attach', juliaDownloadPath])
-            return `/Volumes/Julia-${version}/Julia-${getMajorMinorVersion(version)}.app/Contents/Resources/julia`
+            await exec.exec('/bin/bash', ['-c', `cp -a /Volumes/Julia-*/Julia-*.app/Contents/Resources/julia ${tempInstallDir}`])
+            return path.join(tempInstallDir, 'julia')
         default:
-            throw `Platform ${osPlat} is not supported`
+            throw new Error(`Platform ${osPlat} is not supported`)
     }
 }

src/setup-julia.ts

@@ -2,16 +2,51 @@ import * as core from '@actions/core'
 import * as exec from '@actions/exec'
 import * as tc from '@actions/tool-cache'
 
+import * as fs from 'fs'
+import * as https from 'https'
 import * as path from 'path'
 
 import * as installer from './installer'
 
 async function run() {
     try {
+        // Debugging info
+        if (core.isDebug()) {
+            // Log Runner IP Address
+            https.get('https://httpbin.julialang.org/ip', resp => {
+                let data = ''
+
+                resp.on('data', chunk => {
+                    data += chunk
+                })
+
+                resp.on('end', () => {
+                    core.debug(`Runner IP address: ${JSON.parse(data).origin}`)
+                })
+            }).on('error', err => {
+                core.debug(`ERROR: Could not retrieve runner IP: ${err}`)
+            })
+        }
+
+        // Inputs
         const versionInput = core.getInput('version')
         const arch = core.getInput('arch')
-        const availableReleases = installer.juliaVersions
-        const version = await installer.getJuliaVersion(availableReleases, versionInput)
+
+        // It can easily happen that, for example, a workflow file contains an input `version: ${{ matrix.julia-version }}`
+        // while the strategy matrix only contains a key `${{ matrix.version }}`.
+        // In that case, we want the action to fail, rather than trying to download julia from an URL that's missing parts and 404ing.
+        // We _could_ fall back to the default but that means that builds silently do things differently than they're meant to, which
+        // is worse than failing the build.
+        if (!versionInput) {
+            throw new Error('Version input must not be null')
+        }
+        if (!arch) {
+            throw new Error(`Arch input must not be null`)
+        }
+
+        const versionInfo = await installer.getJuliaVersionInfo()
+        const availableReleases = await installer.getJuliaVersions(versionInfo)
+        const version = installer.getJuliaVersion(availableReleases, versionInput)
         core.debug(`selected Julia version: ${arch}/${version}`)
 
         // Search in cache
@@ -19,21 +54,32 @@ async function run() {
         juliaPath = tc.find('julia', version, arch)
 
         if (!juliaPath) {
-            core.debug(`could not find Julia ${version} in cache`)
-            const juliaInstallationPath = await installer.installJulia(version, arch);
+            core.debug(`could not find Julia ${arch}/${version} in cache`)
+            const juliaInstallationPath = await installer.installJulia(versionInfo, version, arch)
 
             // Add it to cache
             juliaPath = await tc.cacheDir(juliaInstallationPath, 'julia', version, arch)
             core.debug(`added Julia to cache: ${juliaPath}`)
+
+            // Remove temporary dir
+            fs.rmdirSync(juliaInstallationPath, {recursive: true})
         } else {
             core.debug(`using cached version of Julia: ${juliaPath}`)
         }
 
         // Add it to PATH
         core.addPath(path.join(juliaPath, 'bin'))
+
+        // Set output
+        core.setOutput('julia-bindir', path.join(juliaPath, 'bin'))
         
-        // Test if Julia has been installed by showing versioninfo()
-        await exec.exec('julia', ['-e', 'using InteractiveUtils; versioninfo()'])
+        // Test if Julia has been installed
+        exec.exec('julia', ['--version'])
+
+        // If enabled, also show the full version info
+        if (core.getInput('show-versioninfo') == 'true') {
+            exec.exec('julia', ['-e', 'using InteractiveUtils; versioninfo()'])
+        }
     } catch (error) {
         core.setFailed(error.message)
     }