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Re: Problem using multiple manifest files
From: |
Chris Marusich |
Subject: |
Re: Problem using multiple manifest files |
Date: |
Tue, 23 Oct 2018 01:07:08 -0700 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) |
Mikhail Kryshen <address@hidden> writes:
> Chris Marusich <address@hidden> writes:
>
>> Mikhail Kryshen <address@hidden> writes:
>>
>>> (use-modules (srfi srfi-1)
>>> ((guix ui) #:select (make-user-module)))
>>>
>>> (define (load-manifest file)
>>> ;; Load manifest file in a fresh module with necessary imports.
>>> (let ((module (make-user-module '((guix profiles) (gnu)))))
>>> (save-module-excursion
>>> (lambda _
>>> (set-current-module module)
>>> (load (canonicalize-path file))))))
>>
>> Neat example!
>
> Thanks!
>
>> But what is make-user-module doing, and is it necessary?
>
> I looked into the Guix source and reproduced what "guix package -m" does
> to load a manifest file. Make-user-module procedure appear to be used
> in Guix to dynamically create modules for running user code. I could
> have simply used "load" here, but then all the files would be loaded in
> the same environment and could potentially interfere with each other.
I see. Thank you for the explanation! That does indeed seem to be the
intent.
--
Chris
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