helix-mods/flake.nix
Michael Davis 37520f46ae fetch and build grammars with nix in flake
This commit replaces the out-of-date builder in the flake which relied
on submodules for fetching and the compiler for building. Now we
disable fetching and building explicitly with the environment variable
and then use builtins.fetchGit and a derivation mostly derived from
upstream to compile the grammars.

Anecdotally, this is still quite slow as builtins.fetchGit does not
seem to do shallow clones. I'm not sure I see a way around it though
without recording sha256s, which seems cumbersome.
2022-03-10 17:31:57 +09:00

73 lines
2.7 KiB
Nix

{
description = "A post-modern text editor.";
inputs = {
nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
rust-overlay = {
url = "github:oxalica/rust-overlay";
inputs.nixpkgs.follows = "nixpkgs";
};
nixCargoIntegration = {
url = "github:yusdacra/nix-cargo-integration";
inputs.nixpkgs.follows = "nixpkgs";
inputs.rustOverlay.follows = "rust-overlay";
};
# NOTE: the flake looks like it is hanging when it pulls this input because
# the submodules take a long time to clone. This will be fixed in #1659.
helix = {
url = "https://github.com/helix-editor/helix.git";
type = "git";
submodules = true;
flake = false;
};
};
outputs = inputs@{ nixCargoIntegration, helix, ... }:
nixCargoIntegration.lib.makeOutputs {
root = ./.;
renameOutputs = { "helix-term" = "helix"; };
# Set default app to hx (binary is from helix-term release build)
# Set default package to helix-term release build
defaultOutputs = {
app = "hx";
package = "helix";
};
overrides = {
crateOverrides = common: _: {
helix-term = prev:
let
inherit (common) pkgs;
grammars = pkgs.callPackage ./grammars.nix { };
runtimeDir = pkgs.runCommand "helix-runtime" { } ''
mkdir -p $out
ln -s ${common.root}/runtime/* $out
rm -r $out/grammars
ln -s ${grammars} $out/grammars
'';
in
{
# disable fetching and building of tree-sitter grammars in the helix-term build.rs
HELIX_DISABLE_AUTO_GRAMMAR_BUILD = "1";
# link languages and theme toml files since helix-term expects them (for tests)
preConfigure = "ln -s ${common.root}/{languages.toml,theme.toml,base16_theme.toml} ..";
buildInputs = (prev.buildInputs or [ ]) ++ [ common.cCompiler.cc.lib ];
nativeBuildInputs = [ pkgs.makeWrapper ];
postFixup = ''
if [ -f "$out/bin/hx" ]; then
wrapProgram "$out/bin/hx" --set HELIX_RUNTIME "${runtimeDir}"
fi
'';
};
};
shell = common: prev: {
packages = prev.packages ++ (with common.pkgs; [ lld_13 lldb cargo-tarpaulin cargo-flamegraph ]);
env = prev.env ++ [
{ name = "HELIX_RUNTIME"; eval = "$PWD/runtime"; }
{ name = "RUST_BACKTRACE"; value = "1"; }
{ name = "RUSTFLAGS"; value = "-C link-arg=-fuse-ld=lld -C target-cpu=native -Clink-arg=-Wl,--no-rosegment"; }
];
};
};
};
}