Convert test-passthru-ascii and use as nix run target for CI.

Author: kquick

.github/workflows/ci.yml

@@ -41,6 +41,6 @@ jobs:
         with:
           name: kquick
           authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
-      - name: nixbuild_all
+      - name: ci-build
         shell: bash
-        run: nix run github:galoisinc/eng dev nixbuild:all
+        run: nix run github:galoisinc/eng dev ci-build

_eng_/dev.eng

@@ -39,3 +39,29 @@ dev
        in dir = {TopDir}
        needs = nixbuild nixbuild:old nixbuild:recent
        exec = echo All nix builds completed
+
+   ci-build =
+     Build target for CI
+       in dir = {TopDir}
+       notes =
+
+         This uses "nix run" instead of "nix build" for Github CI support.  This
+         is less efficient in that there is no parallelism, but more efficient
+         because a nix build will fetch all dependencies (from
+         github:nixos/nixpkgs or cachix) even if there is no actual build needed
+         and a nix run will only fetch the runtime closure but *will* perform a
+         nix build if needed.
+
+       env vars =
+         CI_TEST_LEVEL = 1
+       exec =
+         echo :::: GHC 8.10
+         nix run --override-input nixpkgs github:nixos/nixpkgs/25.05 .#tasty-sugar.ghc810
+         echo :::: GHC 9.0
+         nix run --override-input nixpkgs github:nixos/nixpkgs/25.05 .#tasty-sugar.ghc90
+         echo :::: GHC 9.2
+         nix run --override-input nixpkgs github:nixos/nixpkgs/25.05 .#tasty-sugar.ghc92
+         for V in 9.4 9.6 9.8 9.10 9.12 ; do
+           echo :::: GHC $V
+           nix run .#tasty-sugar.ghc$(echo $V | sed -e s/\\.//)
+         done

flake.nix

@@ -34,6 +34,16 @@
             }:
     rec
       {
+        apps = levers.eachSystem (s:
+          rec
+          {
+            test-passthru-ascii = {
+              type = "app";
+              program = "${self.packages.${s}.tasty-sugar}/bin/test-passthru-ascii";
+            };
+            default = test-passthru-ascii;
+          });
+
         devShells = levers.haskellShells
           { inherit nixpkgs;
             flake = self;

tasty-sugar.cabal

@@ -183,8 +183,7 @@ test-suite test-sugar
                , text
                , transformers
 
-test-suite test-passthru-ascii
-  type:             exitcode-stdio-1.0
+executable test-passthru-ascii
   hs-source-dirs:   examples/example1
   default-language: Haskell2010
   GHC-options:      -fhide-source-paths