rustPlatform: forward unpack hooks to cargo fetch #221093
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Sometimes it's more ergonomic to set up the build environment in hooks, to add to the default behaviour rather than replacing it. It's very surprising that the fetcher works fine with a custom unpackPhase, but not with custom preUnpack or postUnpack. Packages that use preUnpack or postUnpack and Cargo FODs seem to be very rare. I searched Nixpkgs for files containing one of "cargoHash", "cargoDeps", and "cargoSha256", and one of "preUnpack" or "postUnpack", and only found two such packages: python3.pkgs.tokenizers and rustdesk. Neither of their Cargo FOD hashes are affected by this change. So if that's any indication, we're unlikely to be breaking many out-of-tree hashes with these changes either.
figsoda
approved these changes
Mar 14, 2023
Unfortunately, because these are FODs, none would be rebuilt even if the outputs did change. :/ |
ofborg
bot
added
10.rebuild-darwin: 0
|
oops, didn't think about that anyway, lgtm then. btw I don't think python3.pkgs.tokenizers is affected by this since it doesn't use |
zowoq
approved these changes
Mar 14, 2023
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Description of changes
Sometimes it's more ergonomic to set up the build environment in hooks, to add to the default behaviour rather than replacing it. It's very surprising that the fetcher works fine with a custom
unpackPhase, but not with custompreUnpackorpostUnpack.Packages that use
preUnpackorpostUnpackand Cargo FODs seem to be very rare. I searched Nixpkgs for files containing one ofcargoHash,cargoDeps, andcargoSha256, and one ofpreUnpackorpostUnpack, and only found two such packages:python3.pkgs.tokenizersandrustdesk. Neither of their Cargo FOD hashes are affected by this change. So if that's any indication, we're unlikely to be breaking many out-of-tree hashes with these changes either.Here's an example of where this is useful. I want to apply a patch to a crate dependency, so I patch the program to use a local crate override, then unpack the crate in
postUnpack.Things done
sandbox = trueset innix.conf? (See Nix manual)nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage./result/bin/)