Add production dependencies & build

* Only show versioninfo() in debug mode

* Add input to specify if versioninfo() is displayed

* No access to secrets

README.md

@@ -51,6 +51,8 @@ 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 +71,7 @@ jobs:
         with:
           version: ${{ matrix.julia-version }}
       - run: julia -e 'println("Hello, World!")'
+        shell: bash
 ```
 
 #### 32-bit Julia
@@ -95,6 +98,7 @@ 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 +124,7 @@ jobs:
         with:
           version: ${{ matrix.julia-version }}
       - run: julia -e 'println("Hello, World!")'
+        shell: bash
 ```
 
 ## Versioning

action.yml

@@ -9,6 +9,10 @@ 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'
 runs:
   using: 'node12'
   main: 'lib/setup-julia.js'

lib/setup-julia.js

@@ -43,8 +43,12 @@ 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()']);
+            }
         }
         catch (error) {
             core.setFailed(error.message);

src/setup-julia.ts

@@ -32,8 +32,13 @@ 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()'])
+        }
     } catch (error) {
         core.setFailed(error.message)
     }