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Merge pull request #14382 from aneeshusa/update-ccache-stdenv-documentation
ccacheStdenv: provide working example config in docs
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1d36e6ec07
@ -5765,16 +5765,22 @@ in
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# It can be used by setting in nixpkgs config like this, for example:
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# replaceStdenv = { pkgs }: pkgs.ccacheStdenv;
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# But if you build in chroot, you should have that path in chroot
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# If instantiated directly, it will use the HOME/.ccache as cache directory.
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# You can use an override in packageOverrides to set extraConfig:
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# If instantiated directly, it will use $HOME/.ccache as the cache directory,
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# i.e. /homeless-shelter/.ccache using the Nix daemon.
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# You should specify a different directory using an override in
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# packageOverrides to set extraConfig.
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#
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# Example using Nix daemon (i.e. multiuser Nix install or on NixOS):
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# packageOverrides = pkgs: {
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# ccacheWrapper = pkgs.ccacheWrapper.override {
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# extraConfig = ''
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# CCACHE_COMPRESS=1
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# CCACHE_DIR=/bin/.ccache
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# export CCACHE_COMPRESS=1
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# export CCACHE_DIR=/var/cache/ccache
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# export CCACHE_UMASK=007
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# '';
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# };
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#
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# You can use a different directory, but whichever directory you choose
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# should be owned by user root, group nixbld with permissions 0770.
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ccacheWrapper = makeOverridable ({ extraConfig ? "" }:
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wrapCC (ccache.links extraConfig)) {};
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ccacheStdenv = lowPrio (overrideCC stdenv ccacheWrapper);
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