pyrox.dev / nixpkgs
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buildRustPackage: Fix "warning: file ... may be generated" (#24471)

Every Rust derivation used to emit a warning like the following:

```
setting SOURCE_DATE_EPOCH to timestamp 1490877042 of file cargo-6e0c18c/Cargo.lock
warning: file cargo-6e0c18c/Cargo.lock may be generated; SOURCE_DATE_EPOCH may be non-deterministic
```

The reason is that the dependencies are copied without preserving
timestamps. Changing the build script to timestamp-preserving copy
removes the warning.

Christian Kauhaus 09f24f62 e15b666f

options
unified split
Changed files
+1 -1
pkgs
build-support
rust
default.nix
+1 -1
pkgs/build-support/rust/default.nix 
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    echo "Using cargo deps from $cargoDeps"


     

       
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    cp -r "$cargoDeps" deps


     

       

       
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    cp -a "$cargoDeps" deps


     

       
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    chmod +w deps -R


     

       
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    # It's OK to use /dev/null as the URL because by the time we do this, cargo