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nixpkgs/pkgs/development/beam-modules/build-mix.nix

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Nix

{ stdenv, writeText, elixir, erlang, hex, lib }:
{ name
, version
, src
, buildInputs ? [ ]
, nativeBuildInputs ? [ ]
, erlangCompilerOptions ? [ ]
# Deterministic Erlang builds remove full system paths from debug information
# among other things to keep builds more reproducible. See their docs for more:
# https://www.erlang.org/doc/man/compile
, erlangDeterministicBuilds ? true
, beamDeps ? [ ]
, propagatedBuildInputs ? [ ]
, postPatch ? ""
, compilePorts ? false
, meta ? { }
, enableDebugInfo ? false
, mixEnv ? "prod"
# A config directory that is considered for all the dependencies of an app, typically in $src/config/
# This was initially added, as some of Mobilizon's dependencies need to access the config at build time.
, appConfigPath ? null
, ...
}@attrs:
let
shell = drv: stdenv.mkDerivation {
name = "interactive-shell-${drv.name}";
buildInputs = [ drv ];
};
pkg = self: stdenv.mkDerivation (attrs // {
name = "${name}-${version}";
inherit version src;
MIX_ENV = mixEnv;
MIX_DEBUG = if enableDebugInfo then 1 else 0;
HEX_OFFLINE = 1;
ERL_COMPILER_OPTIONS =
let
options = erlangCompilerOptions ++ lib.optionals erlangDeterministicBuilds [ "deterministic" ];
in
"[${lib.concatStringsSep "," options}]";
LC_ALL = "C.UTF-8";
# add to ERL_LIBS so other modules can find at runtime.
# http://erlang.org/doc/man/code.html#code-path
# Mix also searches the code path when compiling with the --no-deps-check flag
setupHook = attrs.setupHook or
writeText "setupHook.sh" ''
addToSearchPath ERL_LIBS "$1/lib/erlang/lib"
'';
buildInputs = buildInputs ++ [ ];
nativeBuildInputs = nativeBuildInputs ++ [ elixir hex ];
propagatedBuildInputs = propagatedBuildInputs ++ beamDeps;
configurePhase = attrs.configurePhase or ''
runHook preConfigure
${./mix-configure-hook.sh}
${lib.optionalString (!isNull appConfigPath)
# Due to https://hexdocs.pm/elixir/main/Config.html the config directory
# of a library seems to be not considered, as config is always
# application specific. So we can safely delete it.
''
rm -rf config
cp -r ${appConfigPath} config
''}
runHook postConfigure
'';
buildPhase = attrs.buildPhase or ''
runHook preBuild
export HEX_HOME="$TEMPDIR/hex"
export MIX_HOME="$TEMPDIR/mix"
mix compile --no-deps-check
runHook postBuild
'';
installPhase = attrs.installPhase or ''
runHook preInstall
# This uses the install path convention established by nixpkgs maintainers
# for all beam packages. Changing this will break compatibility with other
# builder functions like buildRebar3 and buildErlangMk.
mkdir -p "$out/lib/erlang/lib/${name}-${version}"
# Some packages like db_connection will use _build/shared instead of
# honoring the $MIX_ENV variable.
for reldir in _build/{$MIX_ENV,shared}/lib/${name}/{src,ebin,priv,include} ; do
if test -d $reldir ; then
# Some builds produce symlinks (eg: phoenix priv dircetory). They must
# be followed with -H flag.
cp -Hrt "$out/lib/erlang/lib/${name}-${version}" "$reldir"
fi
done
# Copy the source so it can be used by dependent packages. For example,
# phoenix applications need the source of phoenix and phoenix_html to
# build javascript and css assets.
mkdir -p $out/src
cp -r $src/* "$out/src"
runHook postInstall
'';
# stripping does not have any effect on beam files
# it is however needed for dependencies with NIFs like bcrypt for example
dontStrip = false;
passthru = {
packageName = name;
env = shell self;
inherit beamDeps;
};
});
in
lib.fix pkg