Adding selectors to "extra-specs"

.github/workflows/test_extra-specs.yml

@@ -0,0 +1,61 @@
+name: Test extra-specs
+on:
+  push:
+    branches:
+      - main
+  pull_request: null
+
+jobs:
+  test:
+    name: Test extra-specs
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [windows-latest, ubuntu-latest, macos-latest]
+
+    defaults:
+      run:
+        shell: bash -l {0}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: install mamba
+        uses: ./
+        with:
+          environment-file: environment.yml
+          environment-name: myenv
+          extra-specs: |
+            click
+            sel(linux): xtensor
+            sel(osx): cmake
+            sel(win): ninja
+
+      - name: list environment
+        run: |
+          micromamba list
+
+      - name: check presence
+        if: runner.os == 'linux'
+        run: |
+          if ! micromamba list | grep -q click; then exit 1; fi
+          if ! micromamba list | grep -q xtensor; then exit 1; fi
+          if micromamba list | grep -q cmake; then exit 1; fi
+          if micromamba list | grep -q ninja; then exit 1; fi
+
+      - name: check presence
+        if: runner.os == 'macos'
+        run: |
+          if ! micromamba list | grep -q click; then exit 1; fi
+          if micromamba list | grep -q xtensor; then exit 1; fi
+          if ! micromamba list | grep -q cmake; then exit 1; fi
+          if micromamba list | grep -q ninja; then exit 1; fi
+
+      - name: check presence
+        if: runner.os == 'windows'
+        run: |
+          if ! micromamba list | grep -q click; then exit 1; fi
+          if micromamba list | grep -q xtensor; then exit 1; fi
+          if micromamba list | grep -q cmake; then exit 1; fi
+          if ! micromamba list | grep -q ninja; then exit 1; fi

README.md

@@ -22,7 +22,7 @@ The environment.yml or .lock file for the conda environment. If 'false', no envi
 
 ### `extra-specs`
 
-(Optional) Additional specifications (packages) to install. Pretty useful when using matrix builds to pin versions of a test/run dependency. For multiple packages, use multiline syntax (see examples).
+(Optional) Additional specifications (packages) to install. Pretty useful when using matrix builds to pin versions of a test/run dependency. For multiple packages, use multiline syntax (see examples). Note that selectors (`sel(linux): my-linux-package`, `sel(osx): my-osx-package`, `sel(win): my-win-package`) are available.
 
 ### `cache-downloads`
 

index.js

@@ -172,11 +172,28 @@ if(-not($success)){exit}`
   await executePwsh(`${PATHS.micromambaExe} shell init -s cmd.exe -p ~\\micromamba -y`)
 }
 
+function isSelected (item) {
+  if (/sel\(.*\):.*/gi.test(item)) {
+    return new RegExp('sel\\(' + MAMBA_PLATFORM + '\\):.*', 'gi').test(item)
+  }
+  return true
+}
+
+function stripSelector (item, index, arr) {
+  arr[index] = item.replace(/sel\(.*\): ?/gi, '')
+}
+
+function selectSelectors (extraSpecs) {
+  const ret = extraSpecs.filter(isSelected)
+  ret.forEach(stripSelector)
+  return ret
+}
+
 async function createOrUpdateEnv (envName, envFilePath, extraSpecs) {
   const envFolder = path.join(PATHS.micromambaEnvs, envName)
   const action = fs.existsSync(envFolder) ? 'update' : 'create'
   core.info(`${action} env ${envName}`)
-  const quotedExtraSpecsStr = extraSpecs.map(e => `"${e}"`).join(' ')
+  const quotedExtraSpecsStr = selectSelectors(extraSpecs).map(e => `"${e}"`).join(' ')
   const cmd = `micromamba ${action} -n ${envName} ${quotedExtraSpecsStr} --strict-channel-priority -y -f ${envFilePath}`
   if (MAMBA_PLATFORM === 'win') {
     await executePwsh(cmd)