Hi Thomas, Thomas Danckaert <thomas.dancka...@gmail.com> skribis:
> There is one issue: when I apply this patch series on current master (after > commit e10872c gnu: gpgme: Patch CMake files), `guix build kdevelop` seems to > get stuck after completing the build (at least it doesn't return after running > at ~100%cpu for over 40minutes, with no output). When I apply the patch > series on commit 4d0a3d8 (system: grub: Load relevant EFI modules on EFI > systems), I don't have this problem. I'm not sure if this is an issue just on > my system, or not (I upgraded guix-daemon to lastest master, but the problem > remains). Hints on how to investigate this are welcome! You found a terrrrrible issue that somehow went unnoticed for two weeks! This cute commit: http://git.savannah.gnu.org/cgit/guix.git/commit/?id=d38bc9a9f6feefc465964531520fee5663a12f48 had the effect of disabling caching in the DAG traversal performed by ‘graft-derivation’. For big DAGs like that of kdevelop, you could really feel it. :-) This is fixed by this one-liner: http://git.savannah.gnu.org/cgit/guix.git/commit/?id=90ad5c8836138b7fd4d1bd0243dfa8b30ae0cf21 This other one fixes a related issue that had always been there apparently: http://git.savannah.gnu.org/cgit/guix.git/commit/?id=0aeed5e310504a9ef2cf6a2b2a7e76086eb8c2fc Thanks for the heads-up! Ludo’.
