Add TODO

Also add a link to REPL.it to play with the version matching logic.

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

@@ -0,0 +1,36 @@
+name: Example builds (nightly)
+
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: '0 3 * * *'
+
+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 }}
+      - run: julia --version

.github/workflows/example-builds.yml

@@ -0,0 +1,33 @@
+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"
+        uses: ./
+        with:
+          version: ${{ matrix.julia-version }}
+          arch: ${{ matrix.julia-arch }}
+      - run: julia --version

.gitignore

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

README.md

@@ -11,7 +11,6 @@ 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)
 
 ## Usage
@@ -25,7 +24,7 @@ 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!")'
@@ -41,9 +40,11 @@ You can either specify specific Julia versions or version ranges. If you specify
 
 - `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`.
+- `^1.3.0-rc1` is a caret version range that includes pre-releases starting at `rc1`. It matches all versions `≥ 1.3.0-rc1` and `< 1.4.0`.
+- `^1.3-0` is a caret 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
 
@@ -51,6 +52,8 @@ Currently the list of available versions is hardcoded. You have to use the lates
 
 ### 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 +68,11 @@ 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 +94,12 @@ 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 +121,11 @@ 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
@@ -141,14 +147,5 @@ steps:
   - uses: julia-actions/setup-julia@v0.1.0  # specific version tag
 ```
 
-## Future plans & ideas
-
-In no particular order:
-
-* 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.
-
 ## 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.

__tests__/main.test.ts

@@ -1,5 +1,7 @@
 import * as installer from '../src/installer'
 
+import * as semver from 'semver'
+
 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', () => {
@@ -14,6 +16,10 @@ describe('installer tests', () => {
                 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')
             })
+            it('Doesn\'t change the version when given `nightly`', async () => {
+                expect(await installer.getJuliaVersion([], 'nightly')).toEqual('nightly')
+                expect(await installer.getJuliaVersion(testVersions, 'nightly')).toEqual('nightly')
+            })
         })
         describe('version ranges', () => {
             it('Chooses the highest available version that matches the input', async () => {
@@ -24,4 +30,14 @@ describe('installer tests', () => {
             })
         })
     })
+    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()
+            })
+        })
+    })
 })

action.yml

@@ -9,9 +9,20 @@ 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'
+  cache-artifacts:
+    description: 'Cache ~/.julia/artifacts. Will fail if no file matches **/Project.toml.'
+    required: false
+    default: 'true'
+outputs:
+  artifacts-cache-id:
+    description: 'The cache id of the artifacts cache.'
 runs:
   using: 'node12'
-  main: 'lib/setup-julia.js'
+  main: 'dist/index.js'
 branding:
   icon: 'download'
   color: 'green'

bin/build-release

@@ -1,13 +1,44 @@
 #!/bin/sh
 
-git checkout -b releases/"$1"
+branch_name="$(git symbolic-ref --short -q HEAD)"
+version="v$(jq -r .version package.json)"
+repo="$1"
+
+if [ -z "$repo" ]; then
+    echo "ERROR: must specify repository"
+    exit 1
+fi
+
+echo "=== debug info ==="
+echo "branch: $branch_name"
+echo "version: $version"
+echo "repo: $repo"
+echo "=================="
+echo ""
+
+# Check that the version doesn't exist yet
+version_exists="$(curl -s https://api.github.com/repos/"$repo"/tags -H "Accept: application/vnd.github.v3.full+json" | jq -r '.[] | select(.name == "'"$version"'") | .name')"
+if [ -n "$version_exists" ]; then
+    echo "ERROR: version $version already exists"
+    exit 1
+fi
+
+git checkout -b releases/"$version"
 
 npm install
 npm run build
 npm test
-npm prune --production
+npm run pack
 
-sed -i 's/node_modules/!node_modules/g' .gitignore
+sed -i 's/dist/!dist/g' .gitignore
-git add node_modules
+git add dist
 git commit -a -m "Add production dependencies & build"
-git tag "$1"
+
+# Tags
+major_minor="$(sed 's/\.[^.]*$//' <<< "$version")"
+major="$(sed 's/\.[^.]*$//' <<< "$major_minor")"
+
+git tag "$version"
+git tag -f "$major_minor"
+git tag -f "$major"
+git tag -f "latest"

bin/build-test-release

@@ -0,0 +1,36 @@
+#!/bin/sh
+
+branch_name="$(git symbolic-ref --short -q HEAD)"
+version="v$(jq -r .version package.json)"
+repo="$1"
+
+if [ -z "$repo" ]; then
+    echo "ERROR: must specify repository"
+    exit 1
+fi
+
+echo "=== debug info ==="
+echo "branch: $branch_name"
+echo "version: $version"
+echo "repo: $repo"
+echo "=================="
+echo ""
+
+# Check that the version doesn't exist yet
+version_exists="$(curl -s https://api.github.com/repos/"$repo"/tags -H "Accept: application/vnd.github.v3.full+json" | jq -r '.[] | select(.name == "'"$version"'") | .name')"
+if [ -n "$version_exists" ]; then
+    echo "ERROR: version $version already exists"
+    exit 1
+fi
+
+git checkout -B test/"$branch_name"/releases/"$version"
+
+npm install
+npm run build
+npm test
+npm run pack
+
+# Add dist/ to git and commit it
+sed -i 's/dist/!dist/g' .gitignore
+git add dist
+git commit -a -m "Add production dependencies & build"

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/caching.js

@@ -0,0 +1,40 @@
+"use strict";
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
+    result["default"] = mod;
+    return result;
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const cache = __importStar(require("@actions/cache"));
+const glob = __importStar(require("@actions/glob"));
+const path = __importStar(require("path"));
+// TODO: Change to hashFiles once https://github.com/actions/toolkit/issues/472 has been resolved
+const md5File = __importStar(require("md5-file"));
+const JULIA_HOME = path.join(`${process.env.HOME}`, '.julia');
+/**
+ * Cache the ~/.julia/artifacts directory.
+ */
+function cacheArtifacts() {
+    return __awaiter(this, void 0, void 0, function* () {
+        // TODO: Add error handling in case no Project.toml files are present
+        const projectFiles = yield (yield glob.create('**/Project.toml')).glob();
+        let projectsHash = '';
+        projectFiles.forEach((f) => {
+            projectsHash.concat('-', md5File.sync(f));
+        });
+        const paths = [path.join(JULIA_HOME, 'artifacts')];
+        const key = `artifacts-${process.env.RUNNER_OS}-${projectsHash}`;
+        return cache.saveCache(paths, key);
+    });
+}
+exports.cacheArtifacts = cacheArtifacts;

lib/installer.js

@@ -25,13 +25,17 @@ const semver = __importStar(require("semver"));
 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'];
+exports.juliaVersions = ['v1.5.0-beta1', 'v1.4.2', 'v1.4.1', 'v1.4.0', 'v1.4.0-rc2', 'v1.4.0-rc1', 'v1.3.1', 'v1.3.0', '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) {
     return __awaiter(this, void 0, void 0, function* () {
         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) {
@@ -47,9 +51,7 @@ function getMajorMinorVersion(version) {
     return version.split('.').slice(0, 2).join('.');
 }
 function getDownloadURL(version, arch) {
-    const baseURL = 'https://julialang-s3.julialang.org/bin';
     let platform;
-    const versionDir = getMajorMinorVersion(version);
     if (osPlat === 'win32') { // Windows
         platform = 'winnt';
     }
@@ -65,6 +67,14 @@ function getDownloadURL(version, arch) {
     else {
         throw `Platform ${osPlat} is not supported`;
     }
+    // nightlies
+    if (version == 'nightly') {
+        const baseURL = 'https://julialangnightlies-s3.julialang.org/bin';
+        return `${baseURL}/${platform}/${arch}/${getFileName('latest', arch)}`;
+    }
+    // normal versions
+    const baseURL = 'https://julialang-s3.julialang.org/bin';
+    const versionDir = getMajorMinorVersion(version);
     return `${baseURL}/${platform}/${arch}/${versionDir}/${getFileName(version, arch)}`;
 }
 function getFileName(version, arch) {
@@ -81,7 +91,12 @@ function getFileName(version, arch) {
         ext = 'dmg';
     }
     else if (osPlat === 'linux') { // Linux
-        versionExt = arch == 'x64' ? '-linux-x86_64' : '-linux-i686';
+        if (version == 'latest') { // nightly version
+            versionExt = arch == 'x64' ? '-linux64' : '-linux32';
+        }
+        else {
+            versionExt = arch == 'x64' ? '-linux-x86_64' : '-linux-i686';
+        }
         ext = 'tar.gz';
     }
     else {
@@ -98,15 +113,25 @@ function installJulia(version, arch) {
         // Install it
         switch (osPlat) {
             case 'linux':
-                const juliaExtractedFolder = yield tc.extractTar(juliaDownloadPath);
+                // tc.extractTar doesn't support stripping components, so we have to call tar manually
-                return path.join(juliaExtractedFolder, `julia-${version}`);
+                yield exec.exec('mkdir', [`${process.env.HOME}/julia`]);
+                yield exec.exec('tar', ['xf', juliaDownloadPath, '--strip-components=1', '-C', `${process.env.HOME}/julia`]);
+                return `${process.env.HOME}/julia`;
             case 'win32':
                 const juliaInstallationPath = path.join('C:', 'Julia');
-                yield exec.exec('powershell', ['-Command', `Start-Process -FilePath ${juliaDownloadPath} -ArgumentList "/S /D=${juliaInstallationPath}" -NoNewWindow -Wait`]);
+                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 ${juliaDownloadPath} -ArgumentList "/SILENT /dir=${juliaInstallationPath}" -NoNewWindow -Wait`]);
+                }
+                else {
+                    yield exec.exec('powershell', ['-Command', `Start-Process -FilePath ${juliaDownloadPath} -ArgumentList "/S /D=${juliaInstallationPath}" -NoNewWindow -Wait`]);
+                }
                 return juliaInstallationPath;
             case 'darwin':
                 yield exec.exec('hdiutil', ['attach', juliaDownloadPath]);
-                return `/Volumes/Julia-${version}/Julia-${getMajorMinorVersion(version)}.app/Contents/Resources/julia`;
+                yield exec.exec('mkdir', [`${process.env.HOME}/julia`]);
+                yield exec.exec('/bin/bash', ['-c', `cp -a /Volumes/Julia-*/Julia-*.app/Contents/Resources/julia ${process.env.HOME}`]);
+                return `${process.env.HOME}/julia`;
             default:
                 throw `Platform ${osPlat} is not supported`;
         }

lib/setup-julia.js

@@ -20,6 +20,7 @@ const exec = __importStar(require("@actions/exec"));
 const tc = __importStar(require("@actions/tool-cache"));
 const path = __importStar(require("path"));
 const installer = __importStar(require("./installer"));
+const jlcache = __importStar(require("./caching"));
 function run() {
     return __awaiter(this, void 0, void 0, function* () {
         try {
@@ -43,8 +44,18 @@ function run() {
             }
             // Add it to PATH
             core.addPath(path.join(juliaPath, 'bin'));
-            // Test if Julia has been installed by showing versioninfo()
+            // Test if Julia has been installed
-            yield exec.exec('julia', ['-e', 'using InteractiveUtils; versioninfo()']);
+            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()']);
+            }
+            // Create caches
+            if (core.getInput('cache-artifacts') == 'true') {
+                core.debug('caching artifacts directory...');
+                const cacheId = yield jlcache.cacheArtifacts();
+                core.setOutput('artifacts-cache-id', cacheId.toString());
+            }
         }
         catch (error) {
             core.setFailed(error.message);

package.json

@@ -1,13 +1,12 @@
 {
   "name": "setup-julia",
-  "version": "0.1.0",
+  "version": "1.1.6",
   "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",
+    "pack": "ncc build",
-    "format-check": "prettier  --single-quote --print-width 120 --tab-width 4 --no-semi --check **/*.ts",
     "test": "jest"
   },
   "repository": {
@@ -22,21 +21,24 @@
   "author": "Sascha Mann <git@mail.saschamann.eu>",
   "license": "MIT",
   "dependencies": {
+    "@actions/cache": "^0.2.1",
     "@actions/core": "^1.0.0",
     "@actions/exec": "^1.0.0",
-    "@actions/github": "^1.0.0",
+    "@actions/glob": "^0.1.0",
     "@actions/io": "^1.0.0",
     "@actions/tool-cache": "^1.0.0",
+    "md5-file": "^5.0.0",
     "semver": "^6.3.0"
   },
   "devDependencies": {
     "@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",
     "prettier": "^1.17.1",
-    "ts-jest": "^24.0.2",
+    "ts-jest": "^26.0.0",
     "typescript": "^3.5.1"
   }
 }

src/caching.ts

@@ -0,0 +1,26 @@
+import * as cache from '@actions/cache'
+import * as glob from '@actions/glob'
+
+import * as path from 'path'
+
+// TODO: Change to hashFiles once https://github.com/actions/toolkit/issues/472 has been resolved
+import * as md5File from 'md5-file'
+
+const JULIA_HOME = path.join(`${process.env.HOME}`, '.julia')
+
+/**
+ * Cache the ~/.julia/artifacts directory.
+ */
+export async function cacheArtifacts(): Promise<number> {
+    // TODO: Add error handling in case no Project.toml files are present
+    const projectFiles = await (await glob.create('**/Project.toml')).glob()
+    let projectsHash = ''
+    projectFiles.forEach((f) => {
+        projectsHash.concat('-', md5File.sync(f))
+    })
+
+    const paths = [path.join(JULIA_HOME, 'artifacts')]
+    const key = `artifacts-${process.env.RUNNER_OS}-${projectsHash}`
+
+    return cache.saveCache(paths, key)
+}

src/installer.ts

@@ -2,7 +2,6 @@ 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 os from 'os'
 import * as path from 'path'
 
@@ -13,7 +12,7 @@ const osPlat = os.platform() // possible values: win32 (Windows), linux (Linux),
 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']
+export const juliaVersions = ['v1.5.0-beta1', 'v1.4.2', 'v1.4.1', 'v1.4.0', 'v1.4.0-rc2', 'v1.4.0-rc1', 'v1.3.1', 'v1.3.0', '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']
 
 export async function getJuliaVersion(availableReleases: string[], versionInput: string): Promise<string> {
     if (semver.valid(versionInput) == versionInput) {
@@ -21,6 +20,11 @@ export async function getJuliaVersion(availableReleases: string[], versionInput:
         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) {
@@ -38,9 +42,7 @@ function getMajorMinorVersion(version: string): string {
 }
 
 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'
@@ -55,6 +57,16 @@ function getDownloadURL(version: string, arch: string): string {
         throw `Platform ${osPlat} is not supported`
     }
 
+    // nightlies
+    if (version == 'nightly') {
+        const baseURL = 'https://julialangnightlies-s3.julialang.org/bin'
+        return `${baseURL}/${platform}/${arch}/${getFileName('latest', arch)}`
+    }
+
+    // normal versions
+    const baseURL = 'https://julialang-s3.julialang.org/bin'
+    const versionDir = getMajorMinorVersion(version)
+
     return `${baseURL}/${platform}/${arch}/${versionDir}/${getFileName(version, arch)}`
 }
 
@@ -71,7 +83,11 @@ function getFileName(version: string, arch: string): string {
         versionExt = '-mac64'
         ext = 'dmg'
     } else if (osPlat === 'linux') { // Linux
-        versionExt = arch == 'x64' ? '-linux-x86_64' : '-linux-i686'
+        if (version == 'latest') { // nightly version
+            versionExt = arch == 'x64' ? '-linux64' : '-linux32'
+        } else {
+            versionExt = arch == 'x64' ? '-linux-x86_64' : '-linux-i686'
+        }
         ext = 'tar.gz'
     } else {
         throw `Platform ${osPlat} is not supported`
@@ -89,15 +105,24 @@ export async function installJulia(version: string, arch: string): Promise<strin
     // Install it
     switch (osPlat) {
         case 'linux':
-            const juliaExtractedFolder = await tc.extractTar(juliaDownloadPath)
+            // tc.extractTar doesn't support stripping components, so we have to call tar manually
-            return path.join(juliaExtractedFolder, `julia-${version}`)
+            await exec.exec('mkdir', [`${process.env.HOME}/julia`])
+            await exec.exec('tar', ['xf', juliaDownloadPath, '--strip-components=1', '-C', `${process.env.HOME}/julia`])
+            return `${process.env.HOME}/julia`
         case 'win32':
             const juliaInstallationPath = path.join('C:', 'Julia')
-            await exec.exec('powershell', ['-Command', `Start-Process -FilePath ${juliaDownloadPath} -ArgumentList "/S /D=${juliaInstallationPath}" -NoNewWindow -Wait`])
+            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 ${juliaDownloadPath} -ArgumentList "/SILENT /dir=${juliaInstallationPath}" -NoNewWindow -Wait`])
+            } else {
+                await exec.exec('powershell', ['-Command', `Start-Process -FilePath ${juliaDownloadPath} -ArgumentList "/S /D=${juliaInstallationPath}" -NoNewWindow -Wait`])
+            }
             return juliaInstallationPath
         case 'darwin':
             await exec.exec('hdiutil', ['attach', juliaDownloadPath])
-            return `/Volumes/Julia-${version}/Julia-${getMajorMinorVersion(version)}.app/Contents/Resources/julia`
+            await exec.exec('mkdir', [`${process.env.HOME}/julia`])
+            await exec.exec('/bin/bash', ['-c', `cp -a /Volumes/Julia-*/Julia-*.app/Contents/Resources/julia ${process.env.HOME}`])
+            return `${process.env.HOME}/julia`
         default:
             throw `Platform ${osPlat} is not supported`
     }

src/setup-julia.ts

@@ -5,6 +5,7 @@ import * as tc from '@actions/tool-cache'
 import * as path from 'path'
 
 import * as installer from './installer'
+import * as jlcache from './caching'
 
 async function run() {
     try {
@@ -32,8 +33,20 @@ async function run() {
         // Add it to PATH
         core.addPath(path.join(juliaPath, 'bin'))
         
-        // Test if Julia has been installed by showing versioninfo()
+        // Test if Julia has been installed
-        await exec.exec('julia', ['-e', 'using InteractiveUtils; versioninfo()'])
+        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()'])
+        }
+
+        // Create caches
+        if (core.getInput('cache-artifacts') == 'true') {
+            core.debug('caching artifacts directory...')
+            const cacheId = await jlcache.cacheArtifacts()
+            core.setOutput('artifacts-cache-id', cacheId.toString())
+        }
     } catch (error) {
         core.setFailed(error.message)
     }