Non-viable install plan chosen #979
Description
While trying to build cabal-install under haskel.nix I found that the following would not build:
let
buildCabal = { pkgs }:
let
proj = pkgs.haskell-nix.project {
projectFileName = "cabal.project";
src = fetchGit {
url = "https://github.com/haskell/cabal";
rev = "0ee90d0b426d177c94cef9b2e23fe923dfe56508";
ref = "3.4";
};
cabalProjectLocal = ''
package lukko
flags: -ofd-locking
'';
compiler-nix-name = "ghc8102"; # Not required for `stack.yaml` based projects.
#packages = {
# lukko = {
# configureFlags = "-f-ofd-locking";
# components.library.configureFlags = "-f-ofd-locking";
# };
#};
};
in proj.cabal-install.components.exes.cabal;
#haskellNix = import (builtins.fetchTarball "https://github.com/input-output-hk/haskell.nix/archive/master.tar.gz") {};
haskellNix = import (builtins.fetchTarball "https://github.com/input-output-hk/haskell.nix/archive/0d072acf6e2acb9d5495a489d1e34d8736e5a847.tar.gz") {};
nixpkgsSrc = haskellNix.sources.nixpkgs-2003;
pkgs = import nixpkgsSrc haskellNix.nixpkgsArgs;
armv7l-musl-pkgs = import nixpkgsSrc (haskellNix.nixpkgsArgs // {
crossSystem = pkgs.lib.systems.platforms.armv7l-hf-multiplatform // { config = "armv7l-unknown-linux-musleabihf"; };
});
in {
amd64 = buildCabal { pkgs = pkgs; };
amd64-musl = buildCabal { pkgs = pkgs.pkgsCross.musl64; };
aarch64 = buildCabal { pkgs = pkgs.pkgsCross.aarch64-multiplatform-musl; };
armv7l = buildCabal { pkgs = pkgs.pkgsCross.armv7l-hf-multiplatform; };
armv7l-musl = buildCabal { pkgs = armv7l-musl-pkgs; };
}Trying to build the amd64 attribute fails with strange compilation errors that suggest it's building against the wrong Cabal version. Looking at the build log seems to confirm this:
configuring
Configure flags:
--prefix=/nix/store/hk3w34rxihl9ds7saygbysskzxm5an59-cabal-install-exe-cabal-3.4.0.0
exe:cabal --package-db=clear
--package-db=/nix/store/4hb0jxkjirz8f9mvkrkgymp9kpz5c7hb-cabal-install-exe-cabal-3.4.0.0-config/lib/ghc-8.10.2/package.conf.d
--flags=-debug-conflict-sets --flags=-debug-expensive-assertions
--flags=-debug-tracetree --flags=lukko --flags=native-dns --exact-configuration
--dependency=async=async-2.2.2-K0LmN1fF9zV1F0OSyCG5J0
...
--dependency=Cabal=Cabal-3.2.0.0 --dependency=array=array-0.5.4.0
Even stranger, examining amd64.buildInputs in nix repl shows that Cabal isn't even a build input:
nix-repl> amd64.buildInputs
«derivation /nix/store/1z3550m3j2ja1fcr2hbs01jn3v3vynwx-async-lib-async-2.2.2.drv»
«derivation /nix/store/jnip5aq0vvxygwjn65i2yv3v6q5fzyfw-base16-bytestring-lib-base16-bytestring-0.1.1.7.drv»
«derivation /nix/store/m7v5lsxl2klzgjsng08bm«derivation /nix/store/9ic2f1p8qbywg4vs2bqjyfv54z43hh4w-edit-distance-lib-edit-distance-0.2.2.1.drv»
«derivation /nix/store/sj6m89pl7fq1xj8vdbx7glkp3bp87bj5-hashable-lib-hashable-1.3.0.0.drv»
«derivation /nix/store/sr01iahkmi9qwxwv18jmpb3i8fk76c08-HTTP-lib-HTTP-4000.3.15.drv»
«derivation /nix/store/36ppl8fr2vbgjni51iz2slky2q2zw9j0-network-uri-lib-network-uri-2.6.3.0.drv»
«derivation /nix/store/c5zfjvv2q8zihkipddbqshbl2icq45mc-random-lib-random-1.2.0.drv»
«derivation /nix/store/rx36b0hwhky0ip3bspcj02shvd6l2ps0-stm-lib-stm-2.5.0.0.drv»
«derivation /nix/store/0872rfs96kqdfkspv68fnidyiyi9myza-tar-lib-tar-0.5.1.1.drv»
«derivation /nix/store/ga7l0dzajv9zjn5iw3k71j70mb74r5iq-zlib-lib-zlib-0.6.2.2.drv»
«derivation /nix/store/ij5rzg4937440d62vm64v77ry7jbq1sc-hackage-security-lib-hackage-security-0.6.0.1.drv»
«derivation /nix/store/vyrcm1fp656c1vvwq1n9id05l8qx4s9q-regex-base-lib-regex-base-0.94.0.0.drv»
«derivation /nix/store/xr5wyw4a2qxqlpia5sy6rlxf8pn0vvz4-regex-posix-lib-regex-posix-0.96.0.0.drv»
«derivation /nix/store/knqmp9kkavab47jjbbsbc7kjq452a5m8-resolv-lib-resolv-0.1.2.0.drv»
«derivation /nix/store/5hi2vfyrv1hjbbnahrdzmsrs5i60sx3w-lukko-lib-lukko-0.1.1.2.drv» ]