make sure tests always run

Author: foolnotion

.github/workflows/test-linux.yml

@@ -14,5 +14,11 @@ jobs:
     - uses: actions/checkout@v4
     - uses: cachix/install-nix-action@v27
 
-    - name: Build and test
-      run: nix build .#checks.x86_64-linux.tests
+    - name: Configure
+      run: nix develop -c cmake --preset build-linux -DUSE_SINGLE_PRECISION=ON
+
+    - name: Build test binary
+      run: nix develop -c cmake --build build --target operon_test -j4
+
+    - name: Run tests
+      run: nix develop -c ctest --test-dir build --output-on-failure -j4

flake.nix

@@ -132,10 +132,6 @@
               );
           };
 
-          checks.tests = operon.overrideAttrs (_: {
-            doCheck = true;
-          });
-
           apps.operon-gp.program = "${packages.default}/bin/operon_gp";
           apps.operon-nsgp.program = "${packages.default}/bin/operon_nsgp";
           apps.operon-parse-model.program = "${packages.default}/bin/operon_parse_model";