Build failure: Nix Flake

[techyporcupine]

While updating my NixOS flakes, waybar failed to build with the following.

Installing /build/source/build/meson-private/cava.pc to /nix/store/n4p3xf91z7a38yh31jgydcz00hpcnrad-waybar-0.12.0+date=2025-02-21_8490a1d/lib/pkgconfig
Installing /build/source/resources/config.jsonc to /nix/store/n4p3xf91z7a38yh31jgydcz00hpcnrad-waybar-0.12.0+date=2025-02-21_8490a1d/etc/xdg/waybar
Installing /build/source/resources/style.css to /nix/store/n4p3xf91z7a38yh31jgydcz00hpcnrad-waybar-0.12.0+date=2025-02-21_8490a1d/etc/xdg/waybar
Running phase: gappsWrapperArgsHook
@nix { "action": "setPhase", "phase": "gappsWrapperArgsHook" }
Running phase: dropIconThemeCache
@nix { "action": "setPhase", "phase": "dropIconThemeCache" }
Running phase: dropIconThemeCache
@nix { "action": "setPhase", "phase": "dropIconThemeCache" }
Running phase: dropIconThemeCache
@nix { "action": "setPhase", "phase": "dropIconThemeCache" }
Running phase: fixupPhase
@nix { "action": "setPhase", "phase": "fixupPhase" }
Wrapping program '/nix/store/n4p3xf91z7a38yh31jgydcz00hpcnrad-waybar-0.12.0+date=2025-02-21_8490a1d/bin/waybar'
shrinking RPATHs of ELF executables and libraries in /nix/store/n4p3xf91z7a38yh31jgydcz00hpcnrad-waybar-0.12.0+date=2025-02-21_8490a1d
shrinking /nix/store/n4p3xf91z7a38yh31jgydcz00hpcnrad-waybar-0.12.0+date=2025-02-21_8490a1d/lib/libcava.so
shrinking /nix/store/n4p3xf91z7a38yh31jgydcz00hpcnrad-waybar-0.12.0+date=2025-02-21_8490a1d/bin/.waybar-wrapped
shrinking /nix/store/n4p3xf91z7a38yh31jgydcz00hpcnrad-waybar-0.12.0+date=2025-02-21_8490a1d/bin/waybar
checking for references to /build/ in /nix/store/n4p3xf91z7a38yh31jgydcz00hpcnrad-waybar-0.12.0+date=2025-02-21_8490a1d...
gzipping man pages under /nix/store/n4p3xf91z7a38yh31jgydcz00hpcnrad-waybar-0.12.0+date=2025-02-21_8490a1d/share/man/
moving /nix/store/n4p3xf91z7a38yh31jgydcz00hpcnrad-waybar-0.12.0+date=2025-02-21_8490a1d/lib/systemd/user/* to /nix/store/n4p3xf91z7a38yh31jgydcz00hpcnrad-waybar-0.12.0+date=2025-02-21_8490a1d/share/systemd/user
patching script interpreter paths in /nix/store/n4p3xf91z7a38yh31jgydcz00hpcnrad-waybar-0.12.0+date=2025-02-21_8490a1d
stripping (with command strip and flags -S -p) in  /nix/store/n4p3xf91z7a38yh31jgydcz00hpcnrad-waybar-0.12.0+date=2025-02-21_8490a1d/lib /nix/store/n4p3xf91z7a38yh31jgydcz00hpcnrad-waybar-0.12.0+date=2025-02-21_8490a1d/bin
rewriting symlink /nix/store/n4p3xf91z7a38yh31jgydcz00hpcnrad-waybar-0.12.0+date=2025-02-21_8490a1d/lib/systemd/user to be relative to /nix/store/n4p3xf91z7a38yh31jgydcz00hpcnrad-waybar-0.12.0+date=2025-02-21_8490a1d
Running phase: installCheckPhase
@nix { "action": "setPhase", "phase": "installCheckPhase" }
Executing versionCheckPhase
Did not find version 0.12.0+date=2025-02-21_8490a1d in the output of the command /nix/store/n4p3xf91z7a38yh31jgydcz00hpcnrad-waybar-0.12.0+date=2025-02-21_8490a1d/bin/waybar --version
env: '--version': No such file or directory

Let me know if more is needed.

[thundertheidiot]

this failure probably comes from a dependency of waybar, mine doesn't build after a nix flake update even though i reverted the waybar chunks

[techyporcupine]

Hmm have you done any other troubleshooting? I think it may be a problem with the last release of Waybar, as it thinks '--version' was a reference to a directory.

[mslxl]

The problem caused by this commit NixOS/nixpkgs@ebf799b, which add versionCheckHook

So now we have two options to solve the problem. Removing versionCheckHook, or remove the date suffix of version. I'm not sure what result it caused, I will look up some document, and later I will fix it. khaneliman already work on it