mirrors/jj
1
0
Fork 1
mirror of https://github.com/martinvonz/jj.git synced 2024-10-23 06:57:32 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 7

feat(nix): use mold by default for linking inside 'nix develop'

Browse source 
Summary: Pure QOL improvement, not that this was too awful as it stood. But this
ultimately makes all builds faster, effectively for free; on my Linux machine,
debug link time for jj-cli goes from 3s to 1s.

Signed-off-by: Austin Seipp <aseipp@pobox.com>
Change-Id: I5a0d516363635710733e8bee8f208050
This commit is contained in:
Austin Seipp 2023-07-14 06:34:36 -05:00
parent 154ab9e283
commit e212e10dee
1 changed files with 11 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
flake.nix
View file

@ -24,6 +24,7 @@
rust-overlay.overlays.default
];
};
filterSrc = src: regexes:
pkgs.lib.cleanSourceWith {
inherit src;
@ -33,6 +34,11 @@
in
pkgs.lib.all (re: builtins.match re relPath == null) regexes;
};
# 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;
in
{
packages = {
@ -118,12 +124,16 @@
cargo-insta
cargo-nextest
cargo-watch
];
# Extra, more specific tools follow
] ++ pkgs.lib.optionals useMoldLinker [ mold ];
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 $RUSTFLAGS"
'';
};
}));