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|
{
lib,
runCommand,
runCommandCC,
haskellPackages,
}:
lib.recurseIntoAttrs {
# This is special-cased to return just `ghc`.
trivial = haskellPackages.ghcWithPackages (hsPkgs: [ ]);
# Here we actually build a trivial package.
hello = haskellPackages.ghcWithPackages (hsPkgs: [
hsPkgs.hello
]);
# Here we build a database with multiple packages.
multiple = haskellPackages.ghcWithPackages (hsPkgs: [
hsPkgs.hspec
hsPkgs.unordered-containers
]);
# See: https://github.com/NixOS/nixpkgs/pull/224542
regression-224542 =
let
ghc = haskellPackages.ghcWithPackages (hsPkgs: [
hsPkgs.hspec
]);
in
runCommand "regression-224542"
{
nativeBuildInputs = [
ghc
];
}
''
${ghc.targetPrefix}ghc --interactive \
-Werror=unrecognised-warning-flags \
-Werror=missed-extra-shared-lib \
2>&1 \
| tee ghc-output.txt
# If GHC failed to find a shared library, linking dylibs in
# `ghcWithPackages` didn't work correctly.
if grep --quiet "error: .*-Wmissed-extra-shared-lib" ghc-output.txt \
&& grep --quiet "no such file" ghc-output.txt; then
exit 1
fi
touch $out
'';
use-llvm =
let
ghc = (haskellPackages.ghcWithPackages.override { useLLVM = true; }) (_: [ ]);
in
runCommandCC "ghc-with-packages-use-llvm"
{
nativeBuildInputs = [ ghc ];
}
''
echo 'main = pure ()' > test.hs
# -ddump-llvm is unnecessary, but nice for visual feedback in the build log
${ghc.targetPrefix}ghc --make -fllvm -keep-llvm-files -ddump-llvm test.hs
# Did we actually use the LLVM backend?
test -f test.ll
touch $out
'';
}
|
