And after applying patch locally:

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> ./pre-inst-env guix import go --help
Usage: guix import go PACKAGE-PATH[@VERSION]
Import and convert the Go module for PACKAGE-PATH.  Optionally, a version
can be specified after the arobas (@) character.

  -h, --help             display this help and exit
  -r, --recursive        generate package expressions for all Go modules
                         that are not yet in Guix
  -p, --goproxy=GOPROXY  specify which goproxy server to use
  --pin-versions         use the exact versions of a module's dependencies

Report bugs to: bug-guix@gnu.org.
GNU Guix home page: <https://www.gnu.org/software/guix/>
General help using Guix and GNU software: <https://guix.gnu.org/en/help/>
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