Re: './pre-inst-env guix build xxx' can not find packages in other channels.

[Ian Eure]

Hi Feng,

Feng Shu <tuma...@163.com> writes:
Hello, 

I use the below channel setting:

  (service
       home-channels-service-type
       (cons* (channel
               (name 'nonguix)
               (url "https://gitlab.com/nonguix/nonguix";)
               ;; Enable signature verification:
               (introduction
                (make-channel-introduction
                 "897c1a470da759236cc11798f4e0a5f7d4d59fbc"
                 (openpgp-fingerprint
                  "2A39 3FFF 68F4 EF7A 3D29  12AF 6F51 20A0 22FB 
                  B2D5"))))
              %default-channels))


but when I run 

  ./pre-inst-env guix build unrar


it can not find unrar, for unrar is a package in nonguix 
channel.

The pre-inst-env runs a different Guix than your user (or system) 
Guix, so it won’t know about things like your channel 
configuration.  Running `./pre-inst-env guix describe' will show 
you what I mean.

my question is: how to let pre-inst-env work well with my 
channel
setting, and no need to use -L in every command.

The pre-inst-env is for developing Guix itself, and isn’t needed 
to build packages from other channels.  A simple `guix build 
unrar' will build whatever version of unrar your current Guix 
knows about.  If you want to edit a package in a third-party 
channel, `guix build -L. unrar' inside the nonguix source tree is 
the best way to do that.

 -- Ian