CI: test macOS

Author: lucascolley

.github/workflows/linux.yml

@@ -1,4 +1,4 @@
-name: Linux Tests
+name: Tests
 
 on: [ push, pull_request ]
 
@@ -13,20 +13,23 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  gcc_x86_64_linux:
-    name: GCC X86_64 Linux
-    runs-on: ubuntu-22.04
+  tests:
+    name: ${{ matrix.environment }} ${{ matrix.runs-on }}
+    runs-on: ${{ matrix.runs-on }}
     env:
       XSREF_TABLES_PATH: "${{ github.workspace }}/xsref/tables"
+    strategy:
+      fail-fast: false
+      matrix:
+        environment: [tests-ci]
+        runs-on: [ubuntu-latest, macos-latest]
 
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - uses: prefix-dev/setup-pixi@92815284c57faa15cd896c4d5cfb2d59f32dc43d # v0.8.3
         with:
           pixi-version: v0.44.0
           cache: true
+          environments: ${{ matrix.environment }}
       - name: Run tests
-        run: |
-          pixi run configure-tests
-          pixi run build-only -j2
-          pixi run tests -j2    
+        run: pixi run tests-ci

.gitignore

@@ -43,3 +43,6 @@ build/
 
 # xsref
 xsref/
+
+# IDEs
+.vscode

README.md

@@ -1,5 +1,7 @@
 # xsf
-Special function implementations
+Special function implementations.
+
+See https://github.com/scipy/xsf/issues/1 for context.
 
 ## Tests
 
@@ -9,16 +11,19 @@ To run the tests:
 - [install Pixi](https://pixi.sh/latest/#installation)
 - `pixi run tests`
 
-For subsequent test runs, you can skip re-cloning [`xsref`](https://github.com/scipy/xsref) with:
+You can trigger a rebuild inbetween test runs with:
 
 ```shell
-pixi run --skip-deps tests
+pixi run build-tests
 ```
 
-You can trigger a rebuild inbetween test runs with:
+For subsequent test runs, to skip re-cloning [`xsref`](https://github.com/scipy/xsref) or to control parallelism for individual commands, you can use:
 
 ```shell
-pixi run build-tests
+pixi run clone-xsf
+pixi run configure-tests
+pixi run build-only -j8
+pixi run --skip-deps tests -j2
 ```
 
 > [!NOTE]