82 lines
3.5 KiB
Scheme
82 lines
3.5 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2019-2022, 2024 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (guix build-system channel)
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#:use-module ((guix store) #:select (%store-monad store-lift))
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#:use-module ((guix gexp) #:select (lower-object))
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#:use-module (guix monads)
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#:use-module (guix channels)
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#:use-module (guix build-system)
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#:export (channel-build-system))
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;;; Commentary:
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;;;
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;;; The "channel" build system lets you build Guix instances from channel
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;;; specifications, similar to how 'guix time-machine' would do it, as regular
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;;; packages.
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;;;
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;;; Code:
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(define latest-channel-instances*
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(store-lift latest-channel-instances))
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(define* (build-channels name inputs
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#:key source system commit
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(channels '())
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(authenticate? #t)
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#:allow-other-keys)
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(mlet* %store-monad ((instances
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(cond ((channel-instance? source)
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(return (list source)))
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((channel? source)
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(latest-channel-instances*
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(cons source channels)
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#:authenticate? authenticate?))
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((string? source)
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;; If SOURCE is a store file name, as is the
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;; case when called from (gnu ci), return it as
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;; is.
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(return
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(list (checkout->channel-instance
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source #:commit commit))))
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(else
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(mlet %store-monad ((source
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(lower-object source)))
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(return
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(list (checkout->channel-instance
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source #:commit commit))))))))
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(channel-instances->derivation instances)))
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(define channel-build-system
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;; Build system used to "convert" a channel instance to a package.
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(let ((lower (lambda* (name #:key system source commit (authenticate? #t)
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(channels '())
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#:allow-other-keys)
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(bag
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(name name)
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(system system)
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(build build-channels)
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(arguments `(#:source ,source
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#:channels ,channels
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#:authenticate? ,authenticate?
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#:commit ,commit))))))
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(build-system (name 'channel)
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(description "Turn a channel instance into a package.")
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(lower lower))))
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