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Add shell env to buildHex packages.

This adds erlangPackages.${name}.env, which is usable to launch a shell
with the package and it's dependencies like this:

    nix-shell -A erlangPackages.lager.env

This required:

1) refactoring buildHex to become a fixed-point function,
2) moves output of a package into $out/${name},
3) introduces erlEnv (buildEnv, which links in package and it's deps
   into one directory - a super-simple plagiarization of
   haskellPackages.compiler.ghcWithPackages) and
4) shell function producing a un-buildable derivation to be used by
   nix-shell
This commit is contained in:
Gleb Peregud 2015-12-18 23:51:51 +01:00
parent b3b7f9f37f
commit d7e17c2e71
2 changed files with 96 additions and 73 deletions

View file

@ -1,3 +1,6 @@
# This file is not used not tested at this time, build-hex.nix is the currently
# main vehicle of bringing Erlang packages in.
{ stdenv, erlang, rebar, openssl, libyaml }:
{ name, version

View file

@ -1,5 +1,5 @@
{ stdenv, erlang, rebar3, openssl, libyaml, fetchHex, fetchFromGitHub,
rebar3-pc }:
rebar3-pc, buildEnv }:
{ name, version, sha256
, hexPkg ? name
@ -11,79 +11,99 @@
with stdenv.lib;
stdenv.mkDerivation (attrs // {
name = "${name}-${version}";
let
plugins = pluginDeps ++ (if compilePorts then [rebar3-pc] else []);
getDeps = drv: [drv] ++ (map getDeps drv.erlangDeps);
recursiveDeps = unique (flatten (map getDeps erlangDeps));
recursivePluginsDeps = unique (flatten (map getDeps plugins));
buildInputs = buildInputs ++ [ erlang rebar3 openssl libyaml ];
src = fetchHex {
pkg = hexPkg;
inherit version;
inherit sha256;
erlEnv = drv: buildEnv {
name = "erlang-env-${drv.name}";
paths = [ drv ] ++ recursiveDeps;
ignoreCollisions = false;
meta = drv.meta;
};
postPatch = ''
rm -f rebar rebar3
if [ -e "src/${name}.app.src" ]; then
sed -i -e 's/{ *vsn *,[^}]*}/{vsn, "${version}"}/' "src/${name}.app.src"
fi
${if compilePorts then ''
echo "{plugins, [pc]}." >> rebar.config
'' else ''''}
${rebar3.setupRegistry}
${postPatch}
'';
configurePhase = let
plugins = pluginDeps ++ (if compilePorts then [rebar3-pc] else []);
getDeps = drv: [drv] ++ (map getDeps drv.erlangDeps);
recursiveDeps = unique (flatten (map getDeps erlangDeps));
recursivePluginsDeps = unique (flatten (map getDeps plugins));
in ''
runHook preConfigure
${concatMapStrings (dep: ''
header "linking erlang dependency ${dep}"
ln -s "${dep}" "_build/default/lib/${dep.packageName}"
stopNest
'') recursiveDeps}
${concatMapStrings (dep: ''
header "linking rebar3 plugins ${dep}"
ln -s "${dep}" "_build/default/plugins/${dep.packageName}"
stopNest
'') recursivePluginsDeps}
runHook postConfigure
'';
buildPhase = ''
runHook preBuild
HOME=. rebar3 compile
${if compilePorts then ''
HOME=. rebar3 pc compile
'' else ''''}
runHook postBuild
'';
installPhase = ''
runHook preInstall
mkdir "$out"
for reldir in src ebin priv include; do
fd="_build/default/lib/${name}/$reldir"
[ -d "$fd" ] || continue
cp -Hrt "$out" "$fd"
success=1
done
runHook postInstall
'';
meta = {
inherit (erlang.meta) platforms;
} // meta;
passthru = {
packageName = name;
inherit erlangDeps;
shell = drv: let
drvEnv = erlEnv drv;
in stdenv.mkDerivation {
name = "interactive-shell-${drv.name}";
nativeBuildInputs = [ erlang drvEnv ];
shellHook = ''
export ERL_LIBS="${drvEnv}";
'';
};
})
pkg = self: stdenv.mkDerivation (attrs // {
name = "${name}-${version}";
buildInputs = buildInputs ++ [ erlang rebar3 openssl libyaml ];
src = fetchHex {
pkg = hexPkg;
inherit version;
inherit sha256;
};
postPatch = ''
rm -f rebar rebar3
if [ -e "src/${name}.app.src" ]; then
sed -i -e 's/{ *vsn *,[^}]*}/{vsn, "${version}"}/' "src/${name}.app.src"
fi
${if compilePorts then ''
echo "{plugins, [pc]}." >> rebar.config
'' else ''''}
${rebar3.setupRegistry}
${postPatch}
'';
configurePhase = ''
runHook preConfigure
${concatMapStrings (dep: ''
header "linking erlang dependency ${dep}"
ln -s "${dep}/${dep.name}" "_build/default/lib/${dep.name}"
stopNest
'') recursiveDeps}
${concatMapStrings (dep: ''
header "linking rebar3 plugins ${dep}"
ln -s "${dep}/${dep.name}" "_build/default/plugins/${dep.name}"
stopNest
'') recursivePluginsDeps}
runHook postConfigure
'';
buildPhase = ''
runHook preBuild
HOME=. rebar3 compile
${if compilePorts then ''
HOME=. rebar3 pc compile
'' else ''''}
runHook postBuild
'';
installPhase = ''
runHook preInstall
mkdir -p "$out/${name}"
for reldir in src ebin priv include; do
fd="_build/default/lib/${name}/$reldir"
[ -d "$fd" ] || continue
cp -Hrt "$out/${name}" "$fd"
success=1
done
runHook postInstall
'';
meta = {
inherit (erlang.meta) platforms;
} // meta;
passthru = {
packageName = name;
env = shell self;
inherit erlangDeps;
};
});
in
fix pkg