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{
description = "Jujutsu VCS, a Git-compatible DVCS that is both simple and powerful";
inputs = {
# For listing and iterating nix systems
flake-utils.url = "github:numtide/flake-utils";
# For installing non-standard rustc versions
rust-overlay.url = "github:oxalica/rust-overlay";
rust-overlay.inputs.nixpkgs.follows = "nixpkgs";
rust-overlay.inputs.flake-utils.follows = "flake-utils";
};
outputs = { self, nixpkgs, flake-utils, rust-overlay }: {
overlays.default = (final: prev: {
jujutsu = self.packages.${final.system}.jujutsu;
});
} //
(flake-utils.lib.eachDefaultSystem (system:
let
pkgs = import nixpkgs {
inherit system;
overlays = [
rust-overlay.overlays.default
];
};
filterSrc = src: regexes:
pkgs.lib.cleanSourceWith {
inherit src;
filter = path: type:
let
relPath = pkgs.lib.removePrefix (toString src + "/") (toString path);
in
pkgs.lib.all (re: builtins.match re relPath == null) regexes;
};
ourRustVersion = pkgs.rust-bin.stable."1.76.0".default;
ourRustPlatform = pkgs.makeRustPlatform {
rustc = ourRustVersion;
cargo = ourRustVersion;
};
# these are needed in both devShell and buildInputs
darwinDeps = with pkgs; lib.optionals stdenv.isDarwin [
darwin.apple_sdk.frameworks.Security
darwin.apple_sdk.frameworks.SystemConfiguration
libiconv
];
# work around https://github.com/nextest-rs/nextest/issues/267
# this needs to exist in both the devShell and preCheck phase!
darwinNextestHack = pkgs.lib.optionalString pkgs.stdenv.isDarwin ''
export DYLD_FALLBACK_LIBRARY_PATH=$(${ourRustVersion}/bin/rustc --print sysroot)/lib
'';
# NOTE (aseipp): on Linux, go ahead and use mold by default to improve
# link times a bit; mostly useful for debug build speed, but will help
# over time if we ever get more dependencies, too
useMoldLinker = pkgs.stdenv.isLinux;
# these are needed in both devShell and buildInputs
linuxNativeDeps = with pkgs; lib.optionals stdenv.isLinux [
mold-wrapped
];
in
{
packages = {
jujutsu = ourRustPlatform.buildRustPackage {
pname = "jujutsu";
version = "unstable-${self.shortRev or "dirty"}";
buildFeatures = [ "packaging" ];
cargoBuildFlags = [ "--bin" "jj" ]; # don't build and install the fake editors
useNextest = true;
src = filterSrc ./. [
".*\\.nix$"
"^.jj/"
"^flake\\.lock$"
"^target/"
];
cargoLock.lockFile = ./Cargo.lock;
nativeBuildInputs = with pkgs; [
gzip
installShellFiles
makeWrapper
pkg-config
# for signing tests
gnupg
openssh
] ++ linuxNativeDeps;
buildInputs = with pkgs; [
openssl zstd libgit2 libssh2
] ++ darwinDeps;
ZSTD_SYS_USE_PKG_CONFIG = "1";
LIBSSH2_SYS_USE_PKG_CONFIG = "1";
RUSTFLAGS = pkgs.lib.optionalString useMoldLinker "-C link-arg=-fuse-ld=mold";
NIX_JJ_GIT_HASH = self.rev or "";
CARGO_INCREMENTAL = "0";
preCheck = ''
export RUST_BACKTRACE=1
'' + darwinNextestHack;
postInstall = ''
$out/bin/jj util mangen > ./jj.1
installManPage ./jj.1
installShellCompletion --cmd jj \
--bash <($out/bin/jj util completion bash) \
--fish <($out/bin/jj util completion fish) \
--zsh <($out/bin/jj util completion zsh)
'';
};
default = self.packages.${system}.jujutsu;
};
apps.default = {
type = "app";
program = "${self.packages.${system}.jujutsu}/bin/jj";
};
formatter = pkgs.nixpkgs-fmt;
checks.jujutsu = self.packages.${system}.jujutsu.overrideAttrs ({ ... }: {
# FIXME (aseipp): when running `nix flake check`, this will override the
# main package, and nerf the build and installation phases. this is
# because for some inexplicable reason, the cargo cache gets invalidated
# in between buildPhase and checkPhase, causing every nix CI build to be
# 2x as long.
#
# upstream issue: https://github.com/NixOS/nixpkgs/issues/291222
buildPhase = "true";
installPhase = "touch $out";
# NOTE (aseipp): buildRustPackage also, by default, runs `cargo check`
# in `--release` mode, which is far slower; the existing CI builds all
# use the default `test` profile, so we should too.
cargoCheckType = "test";
});
devShells.default = pkgs.mkShell {
buildInputs = with pkgs; [
# The CI checks against the latest nightly rustfmt, so we should too.
# NOTE (aseipp): include this FIRST before the ourRustVersion override
# below; otherwise, it will be overridden by the ourRustVersion and
# we'll get stable rustfmt instead.
(rust-bin.selectLatestNightlyWith (toolchain: toolchain.rustfmt))
# Using the minimal profile with explicit "clippy" extension to avoid
# two versions of rustfmt
(ourRustVersion.override {
extensions = [
"rust-src" # for rust-analyzer
"clippy"
];
})
# Foreign dependencies
openssl zstd libgit2 libssh2
pkg-config
# Make sure rust-analyzer is present
rust-analyzer
# Additional tools recommended by contributing.md
cargo-deny
cargo-insta
cargo-nextest
cargo-watch
# In case you need to run `cargo run --bin gen-protos`
protobuf
# To run the signing tests
gnupg
openssh
# For building the documentation website
poetry
] ++ darwinDeps ++ linuxNativeDeps;
shellHook = ''
export RUST_BACKTRACE=1
export ZSTD_SYS_USE_PKG_CONFIG=1
export LIBSSH2_SYS_USE_PKG_CONFIG=1
'' + pkgs.lib.optionalString useMoldLinker ''
export RUSTFLAGS="-C link-arg=-fuse-ld=mold"
'' + darwinNextestHack;
};
}));
}