Add production dependencies & build

Bumps [@actions/core](https://github.com/actions/toolkit/tree/HEAD/packages/core) from 1.2.4 to 1.2.6.
- [Release notes](https://github.com/actions/toolkit/releases)
- [Changelog](https://github.com/actions/toolkit/blob/main/packages/core/RELEASES.md)
- [Commits](https://github.com/actions/toolkit/commits/HEAD/packages/core)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.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: '37 17 * * *'
 
 jobs:
   test:
@@ -33,4 +33,5 @@ jobs:
         with:
           version: nightly
           arch: ${{ matrix.julia-arch }}
+          show-versioninfo: 'true'
       - run: julia --version

.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
@@ -26,8 +26,10 @@ jobs:
           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

@@ -1,3 +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`.
+- `1.0` 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 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 `< 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
+## Debug logs
-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.
+
+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', () => {

action.yml

@@ -13,6 +13,9 @@ inputs:
     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: 'dist/index.js'

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

@@ -18,6 +18,7 @@ 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 os = __importStar(require("os"));
 const path = __importStar(require("path"));
 const semver = __importStar(require("semver"));
@@ -25,26 +26,24 @@ 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 = ['v1.4.0', '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 = ['v1.5.2', 'v1.5.1', '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) {
-        if (semver.valid(versionInput) == versionInput) {
+        // versionInput is a valid version, use it directly
-            // versionInput is a valid version, use it directly
+        return versionInput;
-            return versionInput;
+    }
-        }
+    // nightlies
-        // nightlies
+    if (versionInput == 'nightly') {
-        if (versionInput == 'nightly') {
+        return 'nightly';
-            return 'nightly';
+    }
-        }
+    // Use the highest available version that matches versionInput
-        // Use the highest available version that matches versionInput
+    let version = semver.maxSatisfying(availableReleases, versionInput);
-        let version = semver.maxSatisfying(availableReleases, versionInput);
+    if (version == null) {
-        if (version == null) {
+        throw new Error(`Could not find a Julia version that matches ${versionInput}`);
-            throw `Could not find a Julia version that matches ${versionInput}`;
+    }
-        }
+    // GitHub tags start with v, remove it
-        // GitHub tags start with v, remove it
+    version = version.replace(/^v/, '');
-        version = version.replace(/^v/, '');
+    return version;
-        return version;
-    });
 }
 exports.getJuliaVersion = getJuliaVersion;
 function getMajorMinorVersion(version) {
@@ -57,7 +56,7 @@ 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 +64,7 @@ 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 +84,7 @@ 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 +99,7 @@ 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}`;
 }
@@ -110,30 +109,28 @@ function installJulia(version, arch) {
         const downloadURL = getDownloadURL(version, arch);
         core.debug(`downloading Julia from ${downloadURL}`);
         const juliaDownloadPath = yield tc.downloadTool(downloadURL);
+        const tempInstallDir = fs.mkdtempSync(`julia-${arch}-${version}-`);
         // Install it
         switch (osPlat) {
             case 'linux':
                 // tc.extractTar doesn't support stripping components, so we have to call tar manually
-                yield exec.exec('mkdir', [`${process.env.HOME}/julia`]);
+                yield exec.exec('tar', ['xf', juliaDownloadPath, '--strip-components=1', '-C', tempInstallDir]);
-                yield exec.exec('tar', ['xf', juliaDownloadPath, '--strip-components=1', '-C', `${process.env.HOME}/julia`]);
+                return tempInstallDir;
-                return `${process.env.HOME}/julia`;
             case 'win32':
-                const juliaInstallationPath = path.join('C:', 'Julia');
                 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`]);
+                    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 ${juliaDownloadPath} -ArgumentList "/S /D=${juliaInstallationPath}" -NoNewWindow -Wait`]);
+                    yield exec.exec('powershell', ['-Command', `Start-Process -FilePath ${juliaDownloadPath} -ArgumentList "/S /D=${path.join(process.cwd(), tempInstallDir)}" -NoNewWindow -Wait`]);
                 }
-                return juliaInstallationPath;
+                return tempInstallDir;
             case 'darwin':
                 yield exec.exec('hdiutil', ['attach', juliaDownloadPath]);
-                yield exec.exec('mkdir', [`${process.env.HOME}/julia`]);
+                yield exec.exec('/bin/bash', ['-c', `cp -a /Volumes/Julia-*/Julia-*.app/Contents/Resources/julia ${tempInstallDir}`]);
-                yield exec.exec('/bin/bash', ['-c', `cp -a /Volumes/Julia-*/Julia-*.app/Contents/Resources/julia ${process.env.HOME}`]);
+                return path.join(tempInstallDir, 'julia');
-                return `${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 +18,44 @@ 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');
+            // 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;
@@ -37,12 +66,16 @@ function run() {
                 // 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'));
+            // 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

package-lock.json

@@ -1,13 +1,13 @@
 {
   "name": "setup-julia",
-  "version": "0.1.0",
+  "version": "1.3.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
     "@actions/core": {
-      "version": "1.0.0",
+      "version": "1.2.6",
-      "resolved": "https://registry.npmjs.org/@actions/core/-/core-1.0.0.tgz",
+      "resolved": "https://registry.npmjs.org/@actions/core/-/core-1.2.6.tgz",
-      "integrity": "sha512-aMIlkx96XH4E/2YZtEOeyrYQfhlas9jIRkfGPqMwXD095Rdkzo4lB6ZmbxPQSzD+e1M+Xsm98ZhuSMYGv/AlqA=="
+      "integrity": "sha512-ZQYitnqiyBc3D+k7LsgSBmMDVkOVidaagDG7j3fOym77jNunWRuYx7VSHa9GNfFZh+zh61xsCjRj4JxMZlDqTA=="
     },
     "@actions/exec": {
       "version": "1.0.0",
@@ -5158,12 +5158,12 @@
       "dev": true
     },
     "json5": {
-      "version": "2.1.0",
+      "version": "2.1.3",
-      "resolved": "https://registry.npmjs.org/json5/-/json5-2.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/json5/-/json5-2.1.3.tgz",
-      "integrity": "sha512-8Mh9h6xViijj36g7Dxi+Y4S6hNGV96vcJZr/SrlHh1LR/pEn/8j/+qIBbs44YKl69Lrfctp4QD+AdWLTMqEZAQ==",
+      "integrity": "sha512-KXPvOm8K9IJKFM0bmdn8QXh7udDh1g/giieX0NLCaMnb4hEiVFqnop2ImTXCc5e0/oHz3LTqmHGtExn5hfMkOA==",
       "dev": true,
       "requires": {
-        "minimist": "^1.2.0"
+        "minimist": "^1.2.5"
       }
     },
     "jsprim": {
@@ -5235,9 +5235,9 @@
       }
     },
     "lodash": {
-      "version": "4.17.15",
+      "version": "4.17.19",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.19.tgz",
-      "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==",
+      "integrity": "sha512-JNvd8XER9GQX0v2qJgsaN/mzFCNA5BRe/j8JN9d+tWyGLSodKQHKFicdwNYzWwI3wjRnaKPsGj1XkBjx/F96DQ==",
       "dev": true
     },
     "lodash.memoize": {
@@ -5286,9 +5286,9 @@
       }
     },
     "make-error": {
-      "version": "1.3.5",
+      "version": "1.3.6",
-      "resolved": "https://registry.npmjs.org/make-error/-/make-error-1.3.5.tgz",
+      "resolved": "https://registry.npmjs.org/make-error/-/make-error-1.3.6.tgz",
-      "integrity": "sha512-c3sIjNUow0+8swNwVpqoH4YCShKNFkMaw6oH1mNS2haDZQqkeZFlHS3dhoeEbKKmJB4vXpJucU6oH75aDYeE9g==",
+      "integrity": "sha512-s8UhlNe7vPKomQhC1qFelMokr/Sc3AgNbso3n74mVPA5LTZwkB9NlXf4XPamLxJE8h0gh73rM94xvwRT2CVInw==",
       "dev": true
     },
     "makeerror": {
@@ -5754,6 +5754,12 @@
       "integrity": "sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns=",
       "dev": true
     },
+    "picomatch": {
+      "version": "2.2.2",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.2.2.tgz",
+      "integrity": "sha512-q0M/9eZHzmr0AulXyPwNfZjtwZ/RBZlbN3K3CErVrk50T2ASYI7Bye0EvekFY3IP1Nt2DHu0re+V2ZHIpMkuWg==",
+      "dev": true
+    },
     "pify": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
@@ -6567,9 +6573,9 @@
       "dev": true
     },
     "ts-jest": {
-      "version": "24.1.0",
+      "version": "26.0.0",
-      "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-24.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-26.0.0.tgz",
-      "integrity": "sha512-HEGfrIEAZKfu1pkaxB9au17b1d9b56YZSqz5eCVE8mX68+5reOvlM93xGOzzCREIov9mdH7JBG+s0UyNAqr0tQ==",
+      "integrity": "sha512-eBpWH65mGgzobuw7UZy+uPP9lwu+tPp60o324ASRX4Ijg8UC5dl2zcge4kkmqr2Zeuk9FwIjvCTOPuNMEyGWWw==",
       "dev": true,
       "requires": {
         "bs-logger": "0.x",
@@ -6578,31 +6584,75 @@
         "json5": "2.x",
         "lodash.memoize": "4.x",
         "make-error": "1.x",
-        "mkdirp": "0.x",
+        "micromatch": "4.x",
-        "resolve": "1.x",
+        "mkdirp": "1.x",
-        "semver": "^5.5",
+        "semver": "7.x",
-        "yargs-parser": "10.x"
+        "yargs-parser": "18.x"
       },
       "dependencies": {
-        "camelcase": {
+        "braces": {
-          "version": "4.1.0",
+          "version": "3.0.2",
-          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-4.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.2.tgz",
-          "integrity": "sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0=",
+          "integrity": "sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==",
+          "dev": true,
+          "requires": {
+            "fill-range": "^7.0.1"
+          }
+        },
+        "fill-range": {
+          "version": "7.0.1",
+          "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.0.1.tgz",
+          "integrity": "sha512-qOo9F+dMUmC2Lcb4BbVvnKJxTPjCm+RRpe4gDuGrzkL7mEVl/djYSu2OdQ2Pa302N4oqkSg9ir6jaLWJ2USVpQ==",
+          "dev": true,
+          "requires": {
+            "to-regex-range": "^5.0.1"
+          }
+        },
+        "is-number": {
+          "version": "7.0.0",
+          "resolved": "https://registry.npmjs.org/is-number/-/is-number-7.0.0.tgz",
+          "integrity": "sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==",
+          "dev": true
+        },
+        "micromatch": {
+          "version": "4.0.2",
+          "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-4.0.2.tgz",
+          "integrity": "sha512-y7FpHSbMUMoyPbYUSzO6PaZ6FyRnQOpHuKwbo1G+Knck95XVU4QAiKdGEnj5wwoS7PlOgthX/09u5iFJ+aYf5Q==",
+          "dev": true,
+          "requires": {
+            "braces": "^3.0.1",
+            "picomatch": "^2.0.5"
+          }
+        },
+        "mkdirp": {
+          "version": "1.0.4",
+          "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-1.0.4.tgz",
+          "integrity": "sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==",
           "dev": true
         },
         "semver": {
-          "version": "5.7.1",
+          "version": "7.3.2",
-          "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.2.tgz",
-          "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==",
+          "integrity": "sha512-OrOb32TeeambH6UrhtShmF7CRDqhL6/5XpPNp2DuRH6+9QLw/orhp72j87v8Qa1ScDkvrrBNpZcDejAirJmfXQ==",
           "dev": true
         },
-        "yargs-parser": {
+        "to-regex-range": {
-          "version": "10.1.0",
+          "version": "5.0.1",
-          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-10.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
-          "integrity": "sha512-VCIyR1wJoEBZUqk5PA+oOBF6ypbwh5aNB3I50guxAL/quggdfs4TtNHQrSazFA3fYZ+tEqfs0zIGlv0c/rgjbQ==",
+          "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
           "dev": true,
           "requires": {
-            "camelcase": "^4.1.0"
+            "is-number": "^7.0.0"
+          }
+        },
+        "yargs-parser": {
+          "version": "18.1.3",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-18.1.3.tgz",
+          "integrity": "sha512-o50j0JeToy/4K6OZcaQmW6lyXXKhq7csREXcDwk2omFPJEwUNOVtJKvmDr9EI1fAJZUyZcRF7kxGBWmRXudrCQ==",
+          "dev": true,
+          "requires": {
+            "camelcase": "^5.0.0",
+            "decamelize": "^1.2.0"
           }
         }
       }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "setup-julia",
-  "version": "1.1.3",
+  "version": "1.3.1",
   "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": "^1.2.6",
     "@actions/exec": "^1.0.0",
     "@actions/io": "^1.0.0",
     "@actions/tool-cache": "^1.0.0",
@@ -35,7 +35,7 @@
     "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/installer.ts

@@ -2,6 +2,7 @@ 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 os from 'os'
 import * as path from 'path'
 
@@ -12,9 +13,9 @@ 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 = ['v1.4.0', '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 = ['v1.5.2', 'v1.5.1', '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 +29,7 @@ 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 +49,13 @@ 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 +79,7 @@ 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 +91,7 @@ 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}`
@@ -102,28 +103,27 @@ export async function installJulia(version: string, arch: string): Promise<strin
     core.debug(`downloading Julia from ${downloadURL}`)
     const juliaDownloadPath = await tc.downloadTool(downloadURL)
 
+    const tempInstallDir = fs.mkdtempSync(`julia-${arch}-${version}-`)
+
     // Install it
     switch (osPlat) {
         case 'linux':
             // tc.extractTar doesn't support stripping components, so we have to call tar manually
-            await exec.exec('mkdir', [`${process.env.HOME}/julia`])
+            await exec.exec('tar', ['xf', juliaDownloadPath, '--strip-components=1', '-C', tempInstallDir])
-            await exec.exec('tar', ['xf', juliaDownloadPath, '--strip-components=1', '-C', `${process.env.HOME}/julia`])
+            return tempInstallDir
-            return `${process.env.HOME}/julia`
         case 'win32':
-            const juliaInstallationPath = path.join('C:', 'Julia')
             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`])
+                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 ${juliaDownloadPath} -ArgumentList "/S /D=${juliaInstallationPath}" -NoNewWindow -Wait`])
+                await exec.exec('powershell', ['-Command', `Start-Process -FilePath ${juliaDownloadPath} -ArgumentList "/S /D=${path.join(process.cwd(), tempInstallDir)}" -NoNewWindow -Wait`])
             }
-            return juliaInstallationPath
+            return tempInstallDir
         case 'darwin':
             await exec.exec('hdiutil', ['attach', juliaDownloadPath])
-            await exec.exec('mkdir', [`${process.env.HOME}/julia`])
+            await exec.exec('/bin/bash', ['-c', `cp -a /Volumes/Julia-*/Julia-*.app/Contents/Resources/julia ${tempInstallDir}`])
-            await exec.exec('/bin/bash', ['-c', `cp -a /Volumes/Julia-*/Julia-*.app/Contents/Resources/julia ${process.env.HOME}`])
+            return path.join(tempInstallDir, 'julia')
-            return `${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 +2,50 @@ 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')
+
+        // 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
@@ -25,12 +59,18 @@ async function run() {
             // 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
         exec.exec('julia', ['--version'])