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flake.nix
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flake.nix
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{
description = "Minimal devshell flake for haskell";
inputs.haskellNix.url = "github:input-output-hk/haskell.nix";
inputs.nixpkgs.follows = "haskellNix/nixpkgs-unstable";
inputs.flake-utils.url = "github:numtide/flake-utils";
inputs.iohk-nix.url = "github:input-output-hk/iohk-nix";
outputs = { self, nixpkgs, flake-utils, haskellNix, iohk-nix }:
let overlays = {
inherit (iohk-nix.overlays) crypto;
# add static-$pkg for a few packages to be able to pull them im explicitly.
static-libs = (final: prev: {
static-libsodium-vrf = final.libsodium-vrf.overrideDerivation (old: {
configureFlags = old.configureFlags ++ [ "--disable-shared" ];
});
static-secp256k1 = final.secp256k1.overrideDerivation (old: {
configureFlags = old.configureFlags ++ ["--enable-static" "--disable-shared" ];
});
static-gmp = (final.gmp.override { withStatic = true; }).overrideDerivation (old: {
configureFlags = old.configureFlags ++ ["--enable-static" "--disable-shared" ];
});
static-openssl = (final.openssl.override { static = true; });
static-zlib = final.zlib.override { shared = false; };
static-pcre = final.pcre.override { shared = false; };
static-libblst = final.libblst.overrideDerivation (old: {
configureFlags = old.configureFlags ++ [ "--enable-static" "--disable-shared" ];
buildPhase = ''
runHook preBuild
./build.sh
runHook postBuild
'';
postFixup = "";
});
});
cddl-tools = (final: prev: {
cbor-diag = final.callPackage ./pkgs/cbor-diag { };
cddl = final.callPackage ./pkgs/cddl { };
});
musl = (final: prev: prev.lib.optionalAttrs prev.stdenv.hostPlatform.isMusl {
# Fix the following Ruby cross build error:
#
# error: output '/nix/store/6hyyk9wnnxpd5rsr6ivc0s8l1lgvsjrb-ruby-x86_64-unknown-linux-musl-3.3.4'
# is not allowed to refer to the following paths:
# /nix/store/c77wdd4fb0llq37bpmfr73m7s7r1j068-ruby-3.3.4
#
# See https://github.com/NixOS/nixpkgs/issues/347758
ruby = prev.ruby.overrideAttrs (old: {
postInstall = old.postInstall + ''
find $out/${old.passthru.gemPath} -name exts.mk -delete
'';
});
# Tests on static postgresql are failing with:
#
# FATAL: could not load library "/build/postgresql-16.4/.../lib/dict_snowball.so":
# Error relocating /build/postgresql-16.4/tmp_install/nix/store/.../lib/dict_snowball.so:
# pg_any_to_server: symbol not found
postgresql = prev.postgresql.overrideAttrs (_: {
doCheck = false;
});
});
};
supportedSystems = [
"x86_64-linux"
"x86_64-darwin"
# Currently no aarch64 linux builders
# "aarch64-linux"
"aarch64-darwin"
];
in let flake-outputs = flake-utils.lib.eachSystem supportedSystems (system:
let
pkgs = import nixpkgs {
overlays = [haskellNix.overlay] ++ builtins.attrValues overlays;
inherit system;
inherit (haskellNix) config;
};
# These are for checking IOG projects build in an environment
# without haskell packages built by haskell.nix.
#
# Usage:
#
# nix develop github:input-output-hk/devx#ghc96 --no-write-lock-file -c cabal build
#
static-pkgs = if pkgs.stdenv.hostPlatform.isLinux
then if pkgs.stdenv.hostPlatform.isAarch64
then pkgs.pkgsCross.aarch64-multiplatform-musl
else pkgs.pkgsCross.musl64
else pkgs;
js-pkgs = pkgs.pkgsCross.ghcjs;
windows-pkgs = pkgs.pkgsCross.mingwW64;
devShellsWithToolsModule = toolsModule:
# Map the compiler-nix-name to a final compiler-nix-name the way haskell.nix
# projects do (that way we can use short names)
let compilers = pkgs: pkgs.lib.genAttrs [
"ghc810"
"ghc90"
"ghc92"
"ghc94"
"ghc96"
"ghc98"
"ghc910"] (short-name: rec {
inherit pkgs self toolsModule;
compiler-nix-name = pkgs.haskell-nix.resolve-compiler-name short-name;
compiler = pkgs.buildPackages.haskell-nix.compiler.${compiler-nix-name};
});
js-compilers = pkgs: builtins.removeAttrs (compilers pkgs)
[
"ghc90"
"ghc92"
"ghc94"
"ghc910"
];
windows-compilers = pkgs:
pkgs.lib.optionalAttrs (__elem system ["x86_64-linux"])
(builtins.removeAttrs (compilers pkgs)
[
]);
in (builtins.mapAttrs (short-name: args:
import ./dynamic.nix (args // { withIOG = false; })
) (compilers pkgs)
// pkgs.lib.mapAttrs' (short-name: args:
pkgs.lib.nameValuePair "${short-name}-minimal" (
import ./dynamic.nix (args // { withHLS = false; withHlint = false; withIOG = false; })
)) (compilers pkgs)
// pkgs.lib.mapAttrs' (short-name: args:
pkgs.lib.nameValuePair "${short-name}-static" (
import ./static.nix (args // { withIOG = false; })
)) (compilers static-pkgs)
// pkgs.lib.mapAttrs' (short-name: args:
pkgs.lib.nameValuePair "${short-name}-static-minimal" (
import ./static.nix (args // { withHLS = false; withHlint = false; withIOG = false; })
)) (compilers static-pkgs)
// pkgs.lib.mapAttrs' (short-name: args:
pkgs.lib.nameValuePair "${short-name}-js" (
import ./cross-js.nix (args // { pkgs = js-pkgs.pkgsBuildBuild; })
)) (js-compilers js-pkgs)
// pkgs.lib.mapAttrs' (short-name: args:
pkgs.lib.nameValuePair "${short-name}-js-minimal" (
import ./cross-js.nix (args // { pkgs = js-pkgs.buildPackages; withHLS = false; withHlint = false; })
)) (js-compilers js-pkgs)
// pkgs.lib.mapAttrs' (short-name: args:
pkgs.lib.nameValuePair "${short-name}-windows" (
import ./cross-windows.nix args
)) (windows-compilers windows-pkgs)
// pkgs.lib.mapAttrs' (short-name: args:
pkgs.lib.nameValuePair "${short-name}-windows-minimal" (
import ./cross-windows.nix (args // { withHLS = false; withHlint = false; })
)) (windows-compilers windows-pkgs)
// pkgs.lib.mapAttrs' (short-name: args:
pkgs.lib.nameValuePair "${short-name}-iog" (
import ./dynamic.nix (args // { withIOG = true; })
)) (compilers pkgs)
// pkgs.lib.mapAttrs' (short-name: args:
pkgs.lib.nameValuePair "${short-name}-minimal-iog" (
import ./dynamic.nix (args // { withHLS = false; withHlint = false; withIOG = true; })
)) (compilers pkgs)
// pkgs.lib.mapAttrs' (short-name: args:
pkgs.lib.nameValuePair "${short-name}-iog-full" (
import ./dynamic.nix (args // { withIOGFull = true; })
)) (compilers pkgs)
// pkgs.lib.mapAttrs' (short-name: args:
pkgs.lib.nameValuePair "${short-name}-minimal-iog-full" (
import ./dynamic.nix (args // { withHLS = false; withHlint = false; withIOGFull = true; })
)) (compilers pkgs)
// pkgs.lib.mapAttrs' (short-name: args:
pkgs.lib.nameValuePair "${short-name}-static-iog" (
import ./static.nix (args // { withIOG = true; })
)) (compilers static-pkgs)
// pkgs.lib.mapAttrs' (short-name: args:
pkgs.lib.nameValuePair "${short-name}-static-iog-full" (
import ./static.nix (args // { withIOG = true; withIOGFull = true;})
)) (compilers static-pkgs)
// pkgs.lib.mapAttrs' (short-name: args:
pkgs.lib.nameValuePair "${short-name}-static-minimal-iog" (
import ./static.nix (args // { withHLS = false; withHlint = false; withIOG = true; })
)) (compilers static-pkgs)
// pkgs.lib.mapAttrs' (short-name: args:
pkgs.lib.nameValuePair "${short-name}-static-minimal-iog-full" (
import ./static.nix (args // { withHLS = false; withHlint = false; withIOG = true; withIOGFull = true; })
)) (compilers static-pkgs)
// pkgs.lib.mapAttrs' (short-name: args:
pkgs.lib.nameValuePair "${short-name}-js-iog" (
import ./cross-js.nix (args // { pkgs = js-pkgs.buildPackages; withIOG = true; })
)) (js-compilers js-pkgs)
// pkgs.lib.mapAttrs' (short-name: args:
pkgs.lib.nameValuePair "${short-name}-js-minimal-iog" (
import ./cross-js.nix (args // { pkgs = js-pkgs.buildPackages; withHLS = false; withHlint = false; withIOG = true; })
)) (js-compilers js-pkgs)
// pkgs.lib.mapAttrs' (short-name: args:
pkgs.lib.nameValuePair "${short-name}-windows-iog" (
import ./cross-windows.nix (args // { withIOG = true; })
)) (windows-compilers windows-pkgs)
// pkgs.lib.mapAttrs' (short-name: args:
pkgs.lib.nameValuePair "${short-name}-windows-minimal-iog" (
import ./cross-windows.nix (args // { withHLS = false; withHlint = false; withIOG = true; })
)) (windows-compilers windows-pkgs)
);
devShells = devShellsWithToolsModule {};
# Eval must be done on linux when we use hydra to build environment
# scripts for other platforms. That way a linux GHA can download the
# cached files without needing access to the actual build platform.
devShellsWithEvalOnLinux = devShellsWithToolsModule { evalSystem = "x86_64-linux"; };
in {
inherit devShells;
hydraJobs = devShells // {
# *-dev sentinel job. Singals all -env have been built.
required = pkgs.runCommand "required dependencies (${system})" {
_hydraAggregate = true;
constituents = map (name: "${system}.${name}-env") (builtins.attrNames devShellsWithEvalOnLinux);
} "touch $out";
} // (pkgs.lib.mapAttrs' (name: drv:
pkgs.lib.nameValuePair "${name}-env" (
# We need to use unsafeDiscardOutputDependency here, as it will otherwise
# pull in a bunch of dependenceis we don't care about at all from the .drvPath
# query.
let env = pkgs.runCommand "${name}-env.sh" {
requiredSystemFeatures = [ "recursive-nix" ];
nativeBuildInputs = [ pkgs.nix ];
} ''
nix --offline --extra-experimental-features "nix-command flakes" \
print-dev-env '${builtins.unsafeDiscardOutputDependency drv.drvPath}^*' >> $out
'';
# this needs to be linux. It would be great if we could have this
# eval platform agnostic, but flakes don't permit this. A the
# platform where we build the docker images is linux (github
# ubuntu runners), this needs to be evaluable on linux.
in (import nixpkgs { system = "x86_64-linux"; }).writeTextFile {
name = "devx";
executable = true;
text = ''
#!/bin/bash
set -euo pipefail
# Set up the environment
source ${env}
source "$1"
'';
meta = {
description = "DevX shell";
longDescription = ''
The DevX shell is supposed to be used with GitHub Actions, and
can be used by setting the default shell to:
shell: devx {0}
'';
homepage = "https://github.com/input-output-hk/devx";
license = pkgs.lib.licenses.asl20;
platforms = pkgs.lib.platforms.unix;
};
})) devShells) // {
};
packages.cabalProjectLocal.static = (import ./quirks.nix { pkgs = static-pkgs; static = true; }).template;
packages.cabalProjectLocal.cross-js = (import ./quirks.nix { pkgs = js-pkgs; }).template;
packages.cabalProjectLocal.cross-windows = (import ./quirks.nix { pkgs = windows-pkgs; }).template;
});
# we use flake-outputs here to inject a required job that aggregates all required jobs.
in flake-outputs // {
hydraJobs = flake-outputs.hydraJobs // {
required = (import nixpkgs { system = "x86_64-linux"; }).runCommand "required dependencies" {
_hydraAggregate = true;
constituents = map (s: "${s}.required") supportedSystems;
} "touch $out";
};
};
}