Hi!

libfive doesn't build anymore.

I've hacked together a script which uses `guix time-machine` and binary search to
determine when something broke:
<https://codeberg.org/nomike/guix-binary-issue-search>

With this I was able to confirm that the build of libfive is broken starting from
commit 0559a4b5472f9dc4c88240c61e7ad49a95855d6f.

Commit comment:

```plaintext
Author: Nicolas Graves <[email protected]>
Date:   Tue Jul 8 11:26:04 2025 +0200

    build-system: guile: Remove unused build defaults.

    Defaults should be set in guix/build-system/guile.scm rather than
    guix/build/guile-build-system.scm, to disambiguate at first sight
    where those defaults are set.

    * guix/build-system/guile.scm (guile-build)
      <#:not-compiled-file-regexp>: Add default.

    * guix/build/guile-build-system.scm (build): Remove unused keyword
      defaults.

    Signed-off-by: Ludovic Courtès <[email protected]>
```


Error message during `guix build libfive`:

```plaintext
phase `build' succeeded after 334.2 seconds
starting phase `guile-build'
Compiling with Guile 3.0...
compile flags: #f
error: in phase 'guile-build': uncaught exception:
wrong-type-arg "make-regexp" "Wrong type argument in position ~A (expecting ~A): ~S" (1 "string" #f) (#f)
phase `guile-build' failed after 0.0 seconds
Backtrace:
          11 (primitive-load "/gnu/store/w97a3anggzr3iph22d0f07znhxi…")
In guix/build/gnu-build-system.scm:
    966:2 10 (gnu-build #:source _ #:outputs _ #:inputs _ #:phases . #)
In ice-9/boot-9.scm:
  1752:10  9 (with-exception-handler _ _ #:unwind? _ # _)
In srfi/srfi-1.scm:
    634:9  8 (for-each #<procedure 78dccc45db20 at guix/build/gnu-b…> …)
In ice-9/boot-9.scm:
  1752:10  7 (with-exception-handler _ _ #:unwind? _ # _)
In guix/build/gnu-build-system.scm:
   987:23  6 (_)
In guix/build/guile-build-system.scm:
   180:13  5 (build #:outputs _ #:inputs _ #:native-inputs _ # _ # _ …)
In guix/build/utils.scm:
   547:18  4 (find-files "." _ #:stat _ #:directories? _ # _)
   530:21  3 (file-name-predicate #f)
In unknown file:
           2 (make-regexp #f)
In ice-9/boot-9.scm:
  1685:16  1 (raise-exception _ #:continuable? _)
  1685:16  0 (raise-exception _ #:continuable? _)

ice-9/boot-9.scm:1685:16: In procedure raise-exception:
In procedure make-regexp: Wrong type argument in position 1 (expecting string): #f
build process 14 exited with status 256
builder for `/gnu/store/hlzpkqkgmr8f7rpq58hm1fn9q8cbs4ak-libfive-0-5.b1ea998.drv' failed with exit code 1 build of /gnu/store/hlzpkqkgmr8f7rpq58hm1fn9q8cbs4ak-libfive-0-5.b1ea998.drv failed View build log at '/var/log/guix/drvs/hl/zpkqkgmr8f7rpq58hm1fn9q8cbs4ak-libfive-0-5.b1ea998.drv.gz'. guix build: error: build of `/gnu/store/hlzpkqkgmr8f7rpq58hm1fn9q8cbs4ak-libfive-0-5.b1ea998.drv' failed
```

I want to finalize and submit a new package for PythonSCAD. a programmating 3D modelling tool but I'm now blocked
due to it's dependency on libfive.

@Nicolas: Could you (or someone else) have a look at this and fix it please?

Thanks

nomike




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