Add TODO

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

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

@@ -23,7 +23,10 @@ jobs:
       - uses: actions/checkout@v1.0.0
       
       - name: "Install dependencies"
-        run: npm install --production
+        run: |
+          npm install
+          npm run build
+          npm run pack
 
       - name: "Set up Julia (nightly)"
         uses: ./

.github/workflows/example-builds.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        julia-version: ['1.0.5', '1', '^1.3.0-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
@@ -20,7 +20,10 @@ jobs:
       - uses: actions/checkout@v1.0.0
 
       - name: "Install dependencies"
-        run: npm install --production
+        run: |
+          npm install
+          npm run build
+          npm run pack
 
       - name: "Set up Julia"
         uses: ./

.gitignore

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

README.md

@@ -40,10 +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
@@ -69,6 +72,7 @@ jobs:
         with:
           version: ${{ matrix.julia-version }}
       - run: julia -e 'println("Hello, World!")'
+        shell: bash
 ```
 
 #### 32-bit Julia
@@ -95,6 +99,7 @@ jobs:
           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:
@@ -120,6 +125,7 @@ jobs:
         with:
           version: ${{ matrix.julia-version }}
       - run: julia -e 'println("Hello, World!")'
+        shell: bash
 ```
 
 ## Versioning

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
-git add node_modules
+sed -i 's/dist/!dist/g' .gitignore
+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

@@ -1,14 +1,36 @@
 #!/bin/sh
 
 branch_name="$(git symbolic-ref --short -q HEAD)"
+version="v$(jq -r .version package.json)"
+repo="$1"
 
-git checkout -B test/"$branch_name"
+if [ -z "$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 prune --production
+npm run pack
 
-sed -i 's/node_modules/!node_modules/g' .gitignore
-git add node_modules
+# 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

@@ -25,7 +25,7 @@ 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', '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) {

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()
-            yield exec.exec('julia', ['-e', 'using InteractiveUtils; versioninfo()']);
+            // Test if Julia has been installed
+            exec.exec('julia', ['--version']);
+            // If enabled, also show the full version info
+            if (core.getInput('show-versioninfo') == 'true') {
+                exec.exec('julia', ['-e', 'using InteractiveUtils; versioninfo()']);
+            }
+            // 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",
-    "format-check": "prettier  --single-quote --print-width 120 --tab-width 4 --no-semi --check **/*.ts",
+    "pack": "ncc build",
     "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', '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) {

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()
-        await exec.exec('julia', ['-e', 'using InteractiveUtils; versioninfo()'])
+        // Test if Julia has been installed
+        exec.exec('julia', ['--version'])
+
+        // If enabled, also show the full version info
+        if (core.getInput('show-versioninfo') == 'true') {
+            exec.exec('julia', ['-e', 'using InteractiveUtils; versioninfo()'])
+        }
+
+        // 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)
     }