Add production dependencies & build

Bump lodash from 4.17.15 to 4.17.19

.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

@@ -4,7 +4,7 @@ on:
   push:
   pull_request:
   schedule:
-    - cron: '0 3 * * *'
+    - cron: '59 * * * *'
 
 jobs:
   test:
@@ -22,6 +22,9 @@ jobs:
     steps:
       - uses: actions/checkout@v1.0.0
       
+      - name: "Debugging info"
+        run: curl ifconfig.me
+      
       - name: "Install dependencies"
         run: |
           npm install

.github/workflows/example-builds.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        julia-version: ['1.0.5', '1', '^1.4.0-rc1']
+        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

.gitignore

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

@@ -11,7 +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)
-- [Licence info](#licence-info)
+- [Debug logs](#debug-logs)
+- [Third party information](#third-party-information)
 
 ## Usage
 
@@ -39,11 +40,14 @@ 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
 
@@ -146,5 +150,11 @@ steps:
   - uses: julia-actions/setup-julia@v0.1.0  # specific version tag
 ```
 
-## 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.
+## Debug logs
+
+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.
+
+## 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__/main.test.ts

@@ -29,6 +29,13 @@ describe('installer tests', () => {
                 expect(await installer.getJuliaVersion(testVersions, '^1.2.0-rc1')).toEqual('1.2.0')
             })
         })
+        describe('invalid version range (#38)', () => {
+            it('Throws an error if a version range does not match any available version', () => {
+                expect(() => {
+                    installer.getJuliaVersion(['v1.5.0-rc1', 'v1.5.0-beta1', 'v1.4.2', 'v1.4.1', 'v1.4.0', 'v1.4.0-rc2', 'v1.4.0-rc1'], '1.6')
+                }).toThrowError()
+            })
+        })
     })
     describe('node-semver behaviour', () => {
         describe('Windows installer change', () => {

bin/build-release

@@ -1,44 +0,0 @@
-#!/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 $version already exists"
-    exit 1
-fi
-
-git checkout -b releases/"$version"
-
-npm install
-npm run build
-npm test
-npm run pack
-
-sed -i 's/dist/!dist/g' .gitignore
-git add dist
-git commit -a -m "Add production dependencies & build"
-
-# 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

@@ -1,36 +0,0 @@
-#!/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"

lib/installer.js

@@ -25,26 +25,24 @@ 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 = ['v1.4.2', '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'];
+exports.juliaVersions = ['v1.5.0', 'v1.5.0-rc2', 'v1.5.0-rc1', '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) {
-            throw `Could not find a Julia version that matches ${versionInput}`;
-        }
-        // GitHub tags start with v, remove it
-        version = version.replace(/^v/, '');
-        return version;
-    });
+    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 getMajorMinorVersion(version) {
@@ -57,7 +55,7 @@ function getDownloadURL(version, arch) {
     }
     else if (osPlat === 'darwin') { // macOS
         if (arch == 'x86') {
-            throw '32-bit Julia is not available on macOS';
+            throw new Error('32-bit Julia is not available on macOS');
         }
         platform = 'mac';
     }
@@ -65,7 +63,7 @@ function getDownloadURL(version, arch) {
         platform = 'linux';
     }
     else {
-        throw `Platform ${osPlat} is not supported`;
+        throw new Error(`Platform ${osPlat} is not supported`);
     }
     // nightlies
     if (version == 'nightly') {
@@ -85,7 +83,7 @@ function getFileName(version, arch) {
     }
     else if (osPlat === 'darwin') { // macOS
         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';
@@ -100,7 +98,7 @@ function getFileName(version, arch) {
         ext = 'tar.gz';
     }
     else {
-        throw `Platform ${osPlat} is not supported`;
+        throw new Error(`Platform ${osPlat} is not supported`);
     }
     return `julia-${version}${versionExt}.${ext}`;
 }
@@ -133,7 +131,7 @@ function installJulia(version, arch) {
                 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`;
+                throw new Error(`Platform ${osPlat} is not supported`);
         }
     });
 }

lib/setup-julia.js

@@ -18,15 +18,43 @@ 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 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');
+            // 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 availableReleases = installer.juliaVersions;
-            const version = yield installer.getJuliaVersion(availableReleases, versionInput);
+            const version = installer.getJuliaVersion(availableReleases, versionInput);
             core.debug(`selected Julia version: ${arch}/${version}`);
             // Search in cache
             let juliaPath;

package-lock.json

@@ -1,13 +1,13 @@
 {
   "name": "setup-julia",
-  "version": "1.1.5",
+  "version": "1.2.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
     "@actions/core": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@actions/core/-/core-1.0.0.tgz",
-      "integrity": "sha512-aMIlkx96XH4E/2YZtEOeyrYQfhlas9jIRkfGPqMwXD095Rdkzo4lB6ZmbxPQSzD+e1M+Xsm98ZhuSMYGv/AlqA=="
+      "version": "1.2.4",
+      "resolved": "https://registry.npmjs.org/@actions/core/-/core-1.2.4.tgz",
+      "integrity": "sha512-YJCEq8BE3CdN8+7HPZ/4DxJjk/OkZV2FFIf+DlZTC/4iBlzYCD5yjRR6eiOS5llO11zbRltIRuKAjMKaWTE6cg=="
     },
     "@actions/exec": {
       "version": "1.0.0",
@@ -5235,9 +5235,9 @@
       }
     },
     "lodash": {
-      "version": "4.17.15",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
-      "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==",
+      "version": "4.17.19",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.19.tgz",
+      "integrity": "sha512-JNvd8XER9GQX0v2qJgsaN/mzFCNA5BRe/j8JN9d+tWyGLSodKQHKFicdwNYzWwI3wjRnaKPsGj1XkBjx/F96DQ==",
       "dev": true
     },
     "lodash.memoize": {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "setup-julia",
-  "version": "1.1.5",
+  "version": "1.2.0",
   "private": true,
   "description": "setup Julia action",
   "main": "lib/setup-julia.js",
@@ -21,7 +21,7 @@
   "author": "Sascha Mann <git@mail.saschamann.eu>",
   "license": "MIT",
   "dependencies": {
-    "@actions/core": "^1.0.0",
+    "@actions/core": "^1.2.4",
     "@actions/exec": "^1.0.0",
     "@actions/io": "^1.0.0",
     "@actions/tool-cache": "^1.0.0",

src/installer.ts

@@ -12,9 +12,9 @@ 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 = ['v1.4.2', '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 const juliaVersions = ['v1.5.0', 'v1.5.0-rc2', 'v1.5.0-rc1', '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> {
+export function getJuliaVersion(availableReleases: string[], versionInput: string): string {
     if (semver.valid(versionInput) == versionInput) {
         // versionInput is a valid version, use it directly
         return versionInput
@@ -28,7 +28,7 @@ export async function getJuliaVersion(availableReleases: string[], 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}`
+        throw new Error(`Could not find a Julia version that matches ${versionInput}`)
     }
 
     // GitHub tags start with v, remove it
@@ -48,13 +48,13 @@ function getDownloadURL(version: string, arch: string): string {
         platform = 'winnt'
     } else if (osPlat === 'darwin') { // macOS
         if (arch == 'x86') {
-            throw '32-bit Julia is not available on macOS'
+            throw new Error('32-bit Julia is not available on macOS')
         }
         platform = 'mac'
     } else if (osPlat === 'linux') { // Linux
         platform = 'linux'
     } else {
-        throw `Platform ${osPlat} is not supported`
+        throw new Error(`Platform ${osPlat} is not supported`)
     }
 
     // nightlies
@@ -78,7 +78,7 @@ function getFileName(version: string, arch: string): string {
         ext = 'exe'
     } else if (osPlat === 'darwin') { // macOS
         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'
@@ -90,7 +90,7 @@ function getFileName(version: string, arch: string): string {
         }
         ext = 'tar.gz'
     } else {
-        throw `Platform ${osPlat} is not supported`
+        throw new Error(`Platform ${osPlat} is not supported`)
     }
 
     return `julia-${version}${versionExt}.${ext}`
@@ -124,6 +124,6 @@ export async function installJulia(version: string, arch: string): Promise<strin
             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`
+            throw new Error(`Platform ${osPlat} is not supported`)
     }
 }

src/setup-julia.ts

@@ -2,16 +2,49 @@ 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 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')
+
+        // 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 availableReleases = installer.juliaVersions
-        const version = await installer.getJuliaVersion(availableReleases, versionInput)
+        const version = installer.getJuliaVersion(availableReleases, versionInput)
         core.debug(`selected Julia version: ${arch}/${version}`)
 
         // Search in cache