diff options
| -rw-r--r-- | pkgs/build-support/rust/default.nix | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/pkgs/build-support/rust/default.nix b/pkgs/build-support/rust/default.nix index f6177ce198da..d85bfcaa370b 100644 --- a/pkgs/build-support/rust/default.nix +++ b/pkgs/build-support/rust/default.nix @@ -32,6 +32,11 @@ , depsExtraArgs ? {} , cargoParallelTestThreads ? true +# If set the CARGO_TARGET_DIR will be set to this directory. This will allow +# you to avoid rebuilding dependencies. +# This setting is *incompatible* with sandboxing. +, impureCacheDir ? null + # Needed to `pushd`/`popd` into a subdir of a tarball if this subdir # contains a Cargo.toml, but isn't part of a workspace (which is e.g. the # case for `rustfmt`/etc from the `rust-sources). @@ -75,8 +80,17 @@ let cxxForBuild="${buildPackages.stdenv.cc}/bin/${buildPackages.stdenv.cc.targetPrefix}c++"; ccForHost="${stdenv.cc}/bin/${stdenv.cc.targetPrefix}cc"; cxxForHost="${stdenv.cc}/bin/${stdenv.cc.targetPrefix}c++"; - releaseDir = "target/${rustTarget}/${buildType}"; - tmpDir = "${releaseDir}-tmp"; + + releaseDirPrefix = if impureCacheDir == null + then "target" + else + assert + stdenv.lib.assertMsg (stdenv.lib.hasPrefix "/" impureCacheDir) + "impureCacheDir must be an absolute path."; + impureCacheDir; + + releaseDir = "${releaseDirPrefix}/${rustTarget}/${buildType}"; + tmpDir = "target/${rustTarget}/${buildType}-tmp"; # Specify the stdenv's `diff` by abspath to ensure that the user's build # inputs do not cause us to find the wrong `diff`. @@ -98,6 +112,8 @@ stdenv.mkDerivation ((removeAttrs args ["depsExtraArgs"]) // { PKG_CONFIG_ALLOW_CROSS = if stdenv.buildPlatform != stdenv.hostPlatform then 1 else 0; + CARGO_TARGET_DIR = impureCacheDir; + postUnpack = '' eval "$cargoDepsHook" |