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Re: help with copy-build-system


From: Cameron
Subject: Re: help with copy-build-system
Date: Thu, 24 Dec 2020 12:00:07 -0600
User-agent: Cyrus-JMAP/3.3.1-61-gb52c239-fm-20201210.001-gb52c2396

Thank you Julien, This was indeed the problem!

Many apologies to everyone for the double-post as well.

-Cam

On Thu, Dec 24, 2020, at 6:07 AM, Julien Lepiller wrote:
> I don't think this is related to the copy-build-system, because it doesn't 
> change the unpack phase. Whathappens here is that guix expects the content of 
> the tarball to be in a subdirectory, which is not the case here. In the 
> source definition, you should use url-fetch/tarbomb instead of url-fetch.
> 
> Le 23 décembre 2020 18:23:11 GMT-05:00, Cameron <cam@tindall.space> a écrit :
>> Hello,
>> 
>> I am new to Guix but it seems to be the perfect tools for running a small 
>> cluster of servers that I need to administer. The one thing that so far is 
>> holding me back from doing so is the absence of a package for Caddy 
>> (https://caddyserver.com) which this cluster relies on heavily. I hope in 
>> the future to package it properly, but it has a number of golang 
>> dependencies that are not themselves even packaged, and I am far from an 
>> expert on building Go software -- it seems doable but it would be a 
>> relatively big undertaking.
>> 
>> Instead, I thought I could create a private package with copy-build-system 
>> and simply install the pre-built binaries that the Caddy project provides. 
>> This is the caddy-package.scm that I have come up with:
>>> 
>>> (use-modules (guix)
>>>              (guix build-system copy)
>>>      (guix build utils)
>>>              (guix licenses))
>>> 
>>> 
>>> (package
>>> (name "caddy")
>>> 
>>> (version "2.2.1")
>>> 
>>> (source
>>>   (origin
>>>    (method url-fetch)
>>>    (uri (string-append 
>>> "https://github.com/caddyserver/caddy/releases/download/"; version "/caddy_" 
>>> version "_linux_amd64.tar.gz"))
>>>    (sha256
>>>     (base32
>>>      "1va2h8hpxcby9rny7px1y2xks79rxb4svnf9mrdrlc5xn0s04dsx"))))
>>> 
>>> (build-system copy-build-system)
>>> 
>>> (arguments
>>>   '(#:install-plan '(("caddy" "bin/caddy"))))
>>> 
>>> (synopsis "This is a *BAD* Caddy package. It just pulls the already-built 
>>> binary from Github, rather than building from source.")
>>> (description "See https://caddyserver.com/";)
>>> (home-page "https://caddyserver.com/";)
>>> (license asl2.0))
>> 
>> When I build this file with `guix build -f caddy-package.scm -K', it fails 
>> with this rather mysterious (to me) error during the unpack phase:
>> 
>>> starting phase `unpack'
>>> LICENSE
>>> README.md
>>> caddy
>>> Backtrace:
>>>            8 (primitive-load "/gnu/store/fa16h805lxm1fmyhdmnwd09cpd7…")
>>> In ice-9/eval.scm:
>>>    191:35  7 (_ #f)
>>> In guix/build/gnu-build-system.scm:
>>>     838:2  6 (gnu-build #:source _ #:outputs _ #:inputs _ #:phases . #)
>>> In ice-9/boot-9.scm:
>>>   1736:10  5 (with-exception-handler _ _ #:unwind? _ # _)
>>> In srfi/srfi-1.scm:
>>>    857:16  4 (every1 #<procedure 7ffff634c0a0 at guix/build/gnu-bui…> …)
>>> In guix/build/gnu-build-system.scm:
>>>    847:30  3 (_ _)
>>>    164:15  2 (unpack #:source _)
>>>      65:2  1 (first-subdirectory _)
>>> In ice-9/boot-9.scm:
>>>   1669:16  0 (raise-exception _ #:continuable? _)
>>> 
>>> ice-9/boot-9.scm:1669:16: In procedure raise-exception:
>>> Throw to key `match-error' with args `("match" "no matching pattern" ())'.
>>> note: keeping build directory `/tmp/guix-build-caddy-2.2.1.drv-20'
>>> builder for `/gnu/store/p65q2ndw8hcpiq2x62jb9mxv6xa88kkn-caddy-2.2.1.drv' 
>>> failed with exit code 1
>>> build of /gnu/store/p65q2ndw8hcpiq2x62jb9mxv6xa88kkn-caddy-2.2.1.drv failed
>>> View build log at 
>>> '/var/log/guix/drvs/p6/5q2ndw8hcpiq2x62jb9mxv6xa88kkn-caddy-2.2.1.drv.bz2'.
>>> guix build: error: build of 
>>> `/gnu/store/p65q2ndw8hcpiq2x62jb9mxv6xa88kkn-caddy-2.2.1.drv' failed
>> 
>> Would anyone be able to give me any advice here? This seems to comport with 
>> the Reference Manual blurb 
>> (https://guix.gnu.org/manual/en/guix.html#index-copy_002dbuild_002dsystem) 
>> about copy-build-system and also appears similar to several official 
>> packages using copy-build-system (e.g. gcide, vim-neocomplete, neverball) 
>> that I looked to as examples. Clearly though, there is some nuance that I am 
>> missing.
>> 
>> Thanks in advance for any help you can provide.
>> 
>> -Cam Tindall


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