Packaging Proton Bridge: cryptic compilation failure

["Marek Paśnikowski" <marek@marekpasnikowski.pl>]

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Hello Guix

I am towards the end of a first pass of packaging the Proton Bridge program to 
access my Proton Mail with KMail.

I have worked through and learned about many peculiarities of Golang build 
system.  As long as I had an error message, I was able to at least work around 
problems.  However, the latest build failure is completely cryptic to me, as 
its log contains zero error messages.  It works fine until I get a "build 
failed" summary:

[...]
/gnu/store/kw4dwavpd5638kxaxnyhchzbip2ihr7q-go-1.21.5/lib/go/pkg/tool/
linux_amd64/compile -o ./go-build882385907/b247/_pkg_.a -trimpath "/tmp/guix-
build-go-github-com-protonmail-go-proton-api-0.4.0.drv-0/src/golang.org/x/
text/encoding/ianaindex=>golang.org/x/text/encoding/ianaindex;$WORK/b247=>" -p 
golang.org/x/text/encoding/ianaindex -complete -buildid oeeEgL1OtT44tPEiSSgm/
oeeEgL1OtT44tPEiSSgm -goversion go1.21.5 -nolocalimports -importcfg ./go-
build882385907/b247/importcfg -pack ./src/golang.org/x/text/encoding/
ianaindex/ascii.go ./src/golang.org/x/text/encoding/ianaindex/ianaindex.go ./
src/golang.org/x/text/encoding/ianaindex/tables.go
/gnu/store/kw4dwavpd5638kxaxnyhchzbip2ihr7q-go-1.21.5/lib/go/pkg/tool/
linux_amd64/buildid -w $WORK/b247/_pkg_.a # internal
cp $WORK/b247/_pkg_.a /tmp/guix-build-go-github-com-protonmail-go-proton-
api-0.4.0.drv-0/go-build/
59/59c52b9f8132289a5cc9772aa1edea166f986e6eb6d79cd07cbaac8bcbf28c75-d # 
internal
Building 'github.com/ProtonMail/go-proton-api' failed.
[...]

The above is the result of this command:
$ guix build -v 3 -L ~/repositories/sovereign/ proton-bridge --cores=1

I have zero knowledge the Go language itself, which could explain why I have 
trouble understanding this failure.

I would very much appreciate any help from the resident Go packagers, as I am 
unable to make any further progress, and I desire to finally ditch the 
Proton’s web interface.

The entire package code is on my personal channel, in "proton-bridge" branch.  
There is one external dependency on the Efraim’s DFSG channel.

CGIT interface:
https://git.marekpasnikowski.pl/sovereign.git/tree/?h=proton-bridge

GIT clone URL:
https://git.marekpasnikowski.pl/sovereign.git

DFSG channel:
https://git.sr.ht/~efraim/my-guix

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