nixpkgs/pkgs/development/beam-modules/elixir-ls/default.nix
Sergei Maximov 2a9336b426 elixir-ls: build LS using the same Elixir version that is used to run LS
The Elixir LS package in Nixpkgs by default used the latest Elixir
version available to compile and run Elixir LS. The user can build
a custom Elixir LS package with a different Elixir version:

    my-custom-elixir-ls = pkgs.elixir-ls.override {
      elixir = my-custom-elixir;
    };

But by doing so the user changes only the Elixir version used to
run Elixir LS; the Elixir version used to compile Elixir LS doesn't
change. As the result, the custom Elixir LS package uses a different
Elixir version at runtime than the Elixir version it was compiled with.

In order to be able to modify the Elixir version used at build time,
I changed `mixRelease` and `fetchMixDeps` to accept `elixir` and
`hex` as parameters (defaults to the latest Elixir and Hex packages).
2021-11-03 08:46:46 +09:00

73 lines
2.4 KiB
Nix

{ lib, elixir, fetchFromGitHub, fetchMixDeps, mixRelease }:
# Based on the work of Hauleth
# None of this would have happened without him
mixRelease rec {
pname = "elixir-ls";
version = "0.8.1";
inherit elixir;
src = fetchFromGitHub {
owner = "elixir-lsp";
repo = "elixir-ls";
rev = "v${version}";
sha256 = "sha256-KlZq12RCor9GrwA8QMP3R+jUQ/xFHRjkLwwkvthiMU0=";
fetchSubmodules = true;
};
mixFodDeps = fetchMixDeps {
pname = "mix-deps-${pname}";
inherit src version elixir;
sha256 = "sha256-OzjToAg+q/ybCyqzNFk28OBsItjFTbdPi416EPh2qX0=";
};
# elixir_ls is an umbrella app
# override configurePhase to not skip umbrella children
configurePhase = ''
runHook preConfigure
mix deps.compile --no-deps-check
runHook postConfigure
'';
# elixir_ls require a special step for release
# compile and release need to be performed together because
# of the no-deps-check requirement
buildPhase = ''
runHook preBuild
mix do compile --no-deps-check, elixir_ls.release
runHook postBuild
'';
installPhase = ''
runHook preInstall
mkdir -p $out/bin
cp -Rv release $out/lib
# Prepare the wrapper script
substitute release/language_server.sh $out/bin/elixir-ls \
--replace 'exec "''${dir}/launch.sh"' "exec $out/lib/launch.sh"
chmod +x $out/bin/elixir-ls
# prepare the launcher
substituteInPlace $out/lib/launch.sh \
--replace "ERL_LIBS=\"\$SCRIPTPATH:\$ERL_LIBS\"" \
"ERL_LIBS=$out/lib:\$ERL_LIBS" \
--replace "exec elixir" "exec ${elixir}/bin/elixir"
runHook postInstall
'';
meta = with lib; {
homepage = "https://github.com/elixir-lsp/elixir-ls";
description = ''
A frontend-independent IDE "smartness" server for Elixir.
Implements the "Language Server Protocol" standard and provides debugger support via the "Debug Adapter Protocol"
'';
longDescription = ''
The Elixir Language Server provides a server that runs in the background, providing IDEs, editors, and other tools with information about Elixir Mix projects.
It adheres to the Language Server Protocol, a standard for frontend-independent IDE support.
Debugger integration is accomplished through the similar VS Code Debug Protocol.
'';
license = licenses.asl20;
platforms = platforms.unix;
maintainers = teams.beam.members;
};
passthru.updateScript = ./update.sh;
}