haskellPackages: Add buildFromCabalSdist (faster, tested)

4 files changed, 50 insertions, 0 deletions

diff --git a/pkgs/test/haskell/cabalSdist/default.nix b/pkgs/test/haskell/cabalSdist/default.nix
new file mode 100644
index 0000000000000..2ab815f5d4f62
--- /dev/null
+++ b/pkgs/test/haskell/cabalSdist/default.nix
@@ -0,0 +1,28 @@
+{ lib, haskellPackages, runCommand }:
+
+let
+  localRaw = haskellPackages.callCabal2nix "local" ./local {};
+in
+lib.recurseIntoAttrs rec {
+
+  helloFromCabalSdist = haskellPackages.buildFromCabalSdist haskellPackages.hello;
+
+  # A more complicated example with a cabal hook.
+  hercules-ci-cnix-store = haskellPackages.buildFromCabalSdist haskellPackages.hercules-ci-cnix-store;
+
+  localFromCabalSdist = haskellPackages.buildFromCabalSdist localRaw;
+
+  assumptionLocalHasDirectReference = runCommand "localHasDirectReference" {
+    drvPath = builtins.unsafeDiscardOutputDependency localRaw.drvPath;
+  } ''
+    grep ${./local} $drvPath >/dev/null
+    touch $out
+  '';
+
+  localHasNoDirectReference = runCommand "localHasNoDirectReference" {
+    drvPath = builtins.unsafeDiscardOutputDependency localFromCabalSdist.drvPath;
+  } ''
+    grep -v ${./local} $drvPath >/dev/null
+    touch $out
+  '';
+}
diff --git a/pkgs/test/haskell/cabalSdist/local/CHANGELOG.md b/pkgs/test/haskell/cabalSdist/local/CHANGELOG.md
new file mode 100644
index 0000000000000..53cc3ae43d8a2
--- /dev/null
+++ b/pkgs/test/haskell/cabalSdist/local/CHANGELOG.md
@@ -0,0 +1,5 @@
+# Revision history for local
+
+## 0.1.0.0 -- YYYY-mm-dd
+
+* First version. Released on an unsuspecting world.
diff --git a/pkgs/test/haskell/cabalSdist/local/app/Main.hs b/pkgs/test/haskell/cabalSdist/local/app/Main.hs
new file mode 100644
index 0000000000000..65ae4a05d5db9
--- /dev/null
+++ b/pkgs/test/haskell/cabalSdist/local/app/Main.hs
@@ -0,0 +1,4 @@
+module Main where
+
+main :: IO ()
+main = putStrLn "Hello, Haskell!"
diff --git a/pkgs/test/haskell/cabalSdist/local/local.cabal b/pkgs/test/haskell/cabalSdist/local/local.cabal
new file mode 100644
index 0000000000000..1670aa3af631f
--- /dev/null
+++ b/pkgs/test/haskell/cabalSdist/local/local.cabal
@@ -0,0 +1,13 @@
+cabal-version:      2.4
+name:               local
+version:            0.1.0.0
+
+synopsis: Nixpkgs test case
+license:  MIT
+extra-source-files: CHANGELOG.md
+
+executable local
+    main-is:          Main.hs
+    build-depends:    base
+    hs-source-dirs:   app
+    default-language: Haskell2010