Building guix-modular with cuirass

[Mathieu Othacehe <m.othacehe@gmail.com>]

Hi Guix,

I setup my own cuirass server to build guix-modular, here's how:

--8<---------------cut here---------------start------------->8---
(define (build-guix-modular store arguments)
  (let* ((source (assq-ref arguments 'file-name))
         (revision (assq-ref arguments 'revision))
         (build (primitive-load (string-append source "/build-aux/build-self.scm")))
         (res (lambda ()
                `((#:job-name . ,(string-append "guix-" revision "-job"))
                  (#:derivation . ,(derivation-file-name
                                    (run-with-store store
                                      (build source
                                             #:version revision
                                             #:guile-version "2.2"))))))))
    (format (current-error-port) "---------> ~a|~a~%" arguments (res))
    res))
--8<---------------cut here---------------end--------------->8---

This is directly inspired by what I found in build-aux/ directory. While
everything seems great (thanks Ludo for this new feature :p), my other
machines do not use derivations builded by cuirass when running 'guix
pull'.

However, on the machine running cuirass, I have no build error an when
running 'guix pull', nothing is builded and everything works fine.

Any idea how to debug this issue ?

Thanks,

Mathieu