Add configuration input for pixi global settings

.github/workflows/test.yml

@@ -1326,3 +1326,40 @@ jobs:
           echo "Unexpected success!"
           exit 1
         if: ${{ steps.test.outcome != 'failure' }}
+
+  configuration:
+    timeout-minutes: 10
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+      - name: Move pixi.toml
+        run: mv test/default/* .
+      - uses: ./
+        with:
+          cache: false
+          configuration: |
+            change-ps1 = false
+      - name: Check configuration file was created (Unix)
+        run: |
+          test -f ~/.pixi/config.toml
+          cat ~/.pixi/config.toml
+          grep -q "change-ps1 = false" ~/.pixi/config.toml
+        shell: bash
+        if: matrix.os != 'windows-latest'
+      - name: Check configuration file was created (Windows)
+        run: |
+          if (!(Test-Path "$env:USERPROFILE\.pixi\config.toml")) {
+            Write-Error "Config file not found"
+            exit 1
+          }
+          Get-Content "$env:USERPROFILE\.pixi\config.toml"
+          if (!(Select-String -Path "$env:USERPROFILE\.pixi\config.toml" -Pattern "change-ps1 = false" -Quiet)) {
+            Write-Error "Configuration not found in config file"
+            exit 1
+          }
+        if: matrix.os == 'windows-latest'
+      - run: pixi run python --version | grep -q 3.11

README.md

@@ -458,6 +458,22 @@ If you only want to install pixi and not install the current project, you can us
     run-install: false
 ```
 
+### Global configuration
+
+You can specify global pixi configuration in TOML format using the `configuration` input.
+This allows you to customize pixi's behavior by setting various configuration options.
+
+```yml
+- uses: prefix-dev/setup-pixi@v0.9.4
+  with:
+    configuration: |
+      run-post-link-scripts = "insecure"
+```
+
+The configuration will be written to `~/.pixi/config.toml` before pixi runs any commands.
+You can specify any valid pixi configuration option.
+For more information about available configuration options, see the [pixi configuration documentation](https://pixi.sh/latest/reference/pixi_configuration/).
+
 ### Download pixi from a custom URL
 
 You can also download pixi from a custom URL by setting the `pixi-url` input argument.

action.yml

@@ -86,6 +86,10 @@ inputs:
     description: |
       If the action should clean up after itself. Defaults to `true`.
       If `true`, the pixi environment, the pixi binary and the rattler files in ~/.rattler and ~/.cache/rattler are removed.
+  configuration:
+    description: |
+      Global pixi configuration in TOML format. Will be written to ~/.pixi/config.toml.
+      For example, to enable insecure post-link scripts: `run-post-link-scripts = "insecure"`
 
 runs:
   using: node24