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add ccacheStdenv

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when using ccache, rebuild time has been measured
89% faster while not slowing the speed of cold builds
This commit is contained in:
Solène Rapenne 2022-09-23 11:21:19 +02:00
parent fbd0a6c6e2
commit e04b38f789
2 changed files with 5 additions and 2 deletions
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5
doc/manual/src/contributing/hacking.md
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@ -42,7 +42,7 @@ $ nix develop
```
To get a shell with a different compilation environment (e.g. stdenv,
gccStdenv, clangStdenv, clang11Stdenv):
gccStdenv, clangStdenv, clang11Stdenv, ccacheStdenv):
```console
$ nix-shell -A devShells.x86_64-linux.clang11StdenvPackages
@ -54,6 +54,9 @@ or if you have a flake-enabled nix:
$ nix develop .#clang11StdenvPackages
```
Note: you can use `ccacheStdenv` to drastically improve rebuild
time. By default, ccache keeps artifacts in `~/.cache/ccache/`.
To build Nix itself in this shell:
```console

2
flake.nix
View file

@ -23,7 +23,7 @@
crossSystems = [ "armv6l-linux" "armv7l-linux" ];
stdenvs = [ "gccStdenv" "clangStdenv" "clang11Stdenv" "stdenv" "libcxxStdenv" ];
stdenvs = [ "gccStdenv" "clangStdenv" "clang11Stdenv" "stdenv" "libcxxStdenv" "ccacheStdenv" ];
forAllSystems = f: nixpkgs.lib.genAttrs systems (system: f system);
forAllSystemsAndStdenvs = f: forAllSystems (system: