Arch Linux

Arvigeus

Member

Registered: 2013-11-29

Posts: 23

mkosi + Arch: pacman cachedir error during image build

I am trying to build a minimal Arch Linux image using mkosi, following mkosi’s documented Arch support.

mkosi consistently fails at the very first pacman invocation with:

    error: 'failed to resolve path '/var/cache/pacman/pkg' passed to '--cachedir': No such file or directory
    "pacman --root=/buildroot --logfile=/dev/null --dbpath=/var/lib/pacman \
     --cachedir=/var/cache/pacman/mkosi \
     --cachedir=/var/cache/pacman/pkg \
     --hookdir=/buildroot/etc/pacman.d/hooks \
     --arch x86_64 --noconfirm --sync --refresh"

Notes / observations:

- `/var/cache/pacman/pkg` exists on the host:
 
      $ ls -ld /var/cache/pacman/pkg
      drwxr-xr-x 1 - root 15 Dec 18:19 /var/cache/pacman/pkg/

- The error persists even if:
  - the directory exists on the host
  - the directory exists inside the image root
  - the directory is pre-created via mkosi.extra-tree
  - mkosi hooks are used

Minimal mkosi.conf used:

```
    [Distribution]
    Distribution=arch

    [Output]
    Format=directory

    [Content]
    Packages=base linux systemd
    Bootable=yes

    [Build]
    Environment=arch
```

swsnr

Member

Registered: 2024-01-21

Posts: 26

Re: mkosi + Arch: pacman cachedir error during image build

See https://gitlab.archlinux.org/pacman/pacman/-/issues/292

Arvigeus

Member

Registered: 2013-11-29

Posts: 23

Re: mkosi + Arch: pacman cachedir error during image build

Thanks a lot! I picked a great time to try new tech, hehe.

swsnr

Member

Registered: 2024-01-21

Posts: 26

Re: mkosi + Arch: pacman cachedir error during image build

I also opened https://github.com/systemd/mkosi/issues/4081

swsnr

Member

Registered: 2024-01-21

Posts: 26

Re: mkosi + Arch: pacman cachedir error during image build

Meanwhile you can work around this by creating "mkosi.pkgcache/cache/pacman/pkg" alongside your "mkosi.conf" (might require mkosi v26).  This creates the missing cache directory.

Allan

Pacman

From: Brisbane, AU

Registered: 2007-06-09

Posts: 11,619

Website

Re: mkosi + Arch: pacman cachedir error during image build

Hadn't the fix for this been in the repos for a week now?

Edit:  there is still an issue with setting the cachedir on the command-line

---

PGP Key: F99FFE0FEAE999BD | I develop pacman - buy me a drink!

swsnr

Member

Registered: 2024-01-21

Posts: 26

Re: mkosi + Arch: pacman cachedir error during image build

The issue is fixed on mkosi main, so if you install mkosi from git your images should build again.