Help with build failure

[jpotier]

Plume build fails to complete, may be a packaging mistake, may be something else. As I'm not familiar with Rust, I'd really like if someone could give a hand about what's going on here.

• Plume version: 0.4.0
• Operating system: NixOS
• Web Browser: N/A

 % nix-build -I nixpkgs=. -A pkgs.plume          /tmp/nixpkgs-add-plume kktdr
these derivations will be built:
  /nix/store/1x93yfq585p5wq6pljw8fycd77m6fc7d-plume-0.4.0-alpha-4.drv
building '/nix/store/1x93yfq585p5wq6pljw8fycd77m6fc7d-plume-0.4.0-alpha-4.drv'...
unpacking sources
unpacking source archive /nix/store/vj9a5lgiw69rrcyp8s96zlaryxb0fv2d-source
source root is source
unpacking source archive /nix/store/ma7k64s9l01llfbpqs3q7gv30rkkxk04-plume-0.4.0-alpha-4-vendor.tar.gz
patching sources
Validating consistency between /build/source/Cargo.lock and /build/plume-0.4.0-alpha-4-vendor.tar.gz/Cargo.lock
configuring
building
++ env CC_x86_64-unknown-linux-gnu=/nix/store/1wb31gzrjw055xl6d3igzj1gnajzlwbk-gcc-wrapper-9.2.0/bin/cc CXX_x86_64-unknown-linux-gnu=/nix/store/1wb31gzrjw055xl6d3igzj1gnajzlwbk-gcc-wrapper-9.2.0/bin/c++ CC_x86_64-unknown-linux-gnu=/nix/store/1wb31gzrjw055xl6d3igzj1gnajzlwbk-gcc-wrapper-9.2.0/bin/cc CXX_x86_64-unknown-linux-gnu=/nix/store/1wb31gzrjw055xl6d3igzj1gnajzlwbk-gcc-wrapper-9.2.0/bin/c++ cargo build --release --target x86_64-unknown-linux-gnu --frozen
error: failed to select a version for `conv`.
    ... required by package `chomp v0.3.1`
    ... which is depended on by `guid-create v0.1.1`
    ... which is depended on by `plume v0.4.0 (/build/source)`
versions that meet the requirements `= 0.3.3` are: 0.3.3

the package `chomp` depends on `conv`, with features: `std` but `conv` does not have these features.


failed to select a version for `conv` which could resolve this conflict
builder for '/nix/store/1x93yfq585p5wq6pljw8fycd77m6fc7d-plume-0.4.0-alpha-4.drv' failed with exit code 101
error: build of '/nix/store/1x93yfq585p5wq6pljw8fycd77m6fc7d-plume-0.4.0-alpha-4.drv' failed

while testing this package (currently in PR to nixpkgs): NixOS/nixpkgs#84088

[elegaanz]

Sorry for the late reply. It looks like one of our dependency is broken, but it is weird, since you seems to be the first to encounter this issue. We should have seen it too. Maybe the way Nix builds Rust packages does something that changes the dependencies (like cargo update-ing them), but that would be surprising.

[astro]

@jpotier I have a Nix derivation that works around this: https://gitea.c3d2.de/c3d2/nix-config/src/branch/master/overlay/plume/default.nix

Associated NixOS module: https://gitea.c3d2.de/c3d2/nix-config/src/branch/master/lib/plume.nix