* Derivation is missing output
@ 2020-06-22 14:07 Hartmut Goebel
2020-06-25 13:45 ` Hartmut Goebel
0 siblings, 1 reply; 2+ messages in thread
From: Hartmut Goebel @ 2020-06-22 14:07 UTC (permalink / raw)
To: guix-devel
Hi,
I'm still working on the download and importer for hex.pm and the rebar3
build-system for Erlang. So far I made good progress, but now I stepped
over a curious issue:
The downloader is modeled like the one for git, bzr and hg, creating a
fixed script controlled by environment variables. The script is created
as expected. But the script is never run. After some debugging, I
discovered that the source package's .drv file does not define any output:
Derivce([],[…inputs…])
What can be the reason for this?
Some background (the whole source can be found at
https://gitlab.digitalcourage.de/htgoebel/guix/-/tree/HG-rebar-build-system):
(source
(origin
(method hexpm-fetch)
(uri "https://repo.hex.pm/tarballs/getopt-1.0.1.tar")
(sha256
(base32 "1fhqnn4dvcil12cmqmzkmlk14lq5rn7ingld2380i6nl8v2dvm48"))))
and hexpm-fetch returns
(mlet %store-monad ((guile (package->derivation guile system)))
(gexp->derivation (pk (or name file-name)) build
… more arguments))
--
Regards
Hartmut Goebel
| Hartmut Goebel | h.goebel@crazy-compilers.com |
| www.crazy-compilers.com | compilers which you thought are impossible |
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Derivation is missing output
2020-06-22 14:07 Derivation is missing output Hartmut Goebel
@ 2020-06-25 13:45 ` Hartmut Goebel
0 siblings, 0 replies; 2+ messages in thread
From: Hartmut Goebel @ 2020-06-25 13:45 UTC (permalink / raw)
To: guix-devel
Am 22.06.20 um 16:07 schrieb Hartmut Goebel:
> After some debugging, I
> discovered that the source package's .drv file does not define any output:
>
> Derivce([],[…inputs…])
>
> What can be the reason for this?
For the records: This was caused be he gexp (resp. the script) not
referring to `#$outputs`. I've written `outputs` instead.
(Thanks to Ludo for pointing me to the solution)
--
Regards
Hartmut Goebel
| Hartmut Goebel | h.goebel@crazy-compilers.com |
| www.crazy-compilers.com | compilers which you thought are impossible |
^ permalink raw reply [flat|nested] 2+ messages in thread
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2020-06-22 14:07 Derivation is missing output Hartmut Goebel
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