On 07-08-2022 01:14, Dr. Arne Babenhauserheide wrote:
> I get a build error when updating fmit with
>
>      guix upgrade fmit
>
> It fails with
>
>      phase `install' succeeded after 0.4 seconds
>      starting phase `wrap-executable'
>      error: in phase 'wrap-executable': uncaught exception:
>      wrong-type-arg "string-append" "Wrong type (expecting ~A): ~S" ("string" #f) (#f)
>      phase `wrap-executable' failed after 0.0 seconds
>      Backtrace:
>                14 (primitive-load "/gnu/store/k7dvw09nink46bbpls85bzw5560…")
>      In guix/build/gnu-build-system.scm:
>          906:2 13 (gnu-build #:source _ #:outputs _ #:inputs _ #:phases . #)
>      In ice-9/boot-9.scm:
>        1752:10 12 (with-exception-handler _ _ #:unwind? _ # _)
>      In srfi/srfi-1.scm:
>          634:9 11 (for-each #<procedure 7ffff0b66660 at guix/build/gnu-b…> …)
>      In ice-9/boot-9.scm:
>        1752:10 10 (with-exception-handler _ _ #:unwind? _ # _)
>      In guix/build/gnu-build-system.scm:
>         927:23  9 (_)
>      In ice-9/eval.scm:
>          619:8  8 (_ #(#(#(#<directory (guile-user) 7ffff1fd3c80>) # #) #))
>          163:9  7 (_ #(#(#(#<directory (guile-user) 7ffff1fd3c80>) # #) #))
>         174:20  6 (_ #(#(#(#<directory (guile-user) 7ffff1fd3c80>) # #) #))
>         177:32  5 (lp (#<procedure 7ffff070c120 at ice-9/eval.scm:182:7 …>))
>      In ice-9/boot-9.scm:
>         222:29  4 (map1 ("qtbase" "qtmultimedia-5" "qtsvg-5"))
>         222:17  3 (map1 ("qtmultimedia-5" "qtsvg-5"))

Looks like fallout from #56771, the fix is possibly just a matter of 
replacing "qtmultimedia-5" with "qtmultimedia" in the package definition 
and likewise for qtsvg.

Greetings,
Maxime.