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[bug#40469] [PATCH core-updates v2 1/2] build-system/python: Install to
From: |
Jakub Kądziołka |
Subject: |
[bug#40469] [PATCH core-updates v2 1/2] build-system/python: Install to the python output if present. |
Date: |
Sun, 21 Jun 2020 03:27:48 +0200 |
* gnu/build/python-build-system.scm (python-output): New procedure.
(site-packages, install): Use python-output to find the output path.
(wrap, rename-pth-file): Use site-packages where appropriate.
* doc/guix.texi (Build Systems): Mention the new behavior.
---
Following a discussion on IRC, I am changing the approach a bit. Also,
should this go on core-updates or staging? I'm not sure how to account
for all the dependent packages, but just grepping for
python-build-system puts this in the staging range.
$ rg python-build-system gnu/packages | wc -l
1474
doc/guix.texi | 7 +++++++
guix/build/python-build-system.scm | 24 +++++++++++-------------
2 files changed, 18 insertions(+), 13 deletions(-)
diff --git a/doc/guix.texi b/doc/guix.texi
index 2268e159a2..7af98d3e00 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -6685,6 +6685,13 @@ By default guix calls @code{setup.py} under control of
@code{setuptools}, much like @command{pip} does. Some packages are not
compatible with setuptools (and pip), thus you can disable this by
setting the @code{#:use-setuptools?} parameter to @code{#f}.
+
+If a @code{"python"} output is available, the package is installed into it
+instead of the default @code{"out"} output. This is useful for packages that
+include a Python package as only a part of the software, and thus want to
+combine the phases of @code{python-build-system} with another build system.
+Python bindings are a common usecase.
+
@end defvr
@defvr {Scheme Variable} perl-build-system
diff --git a/guix/build/python-build-system.scm
b/guix/build/python-build-system.scm
index 09bd8465c8..62e7a7b305 100644
--- a/guix/build/python-build-system.scm
+++ b/guix/build/python-build-system.scm
@@ -6,6 +6,7 @@
;;; Copyright © 2016 Hartmut Goebel <h.goebel@crazy-compilers.com>
;;; Copyright © 2018 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2018 Arun Isaac <arunisaac@systemreboot.net>
+;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -154,9 +155,14 @@
(major+minor (take components 2)))
(string-join major+minor ".")))
+(define (python-output outputs)
+ "Return the path of the python output, if there is one, or fall-back to out."
+ (or (assoc-ref outputs "python")
+ (assoc-ref outputs "out")))
+
(define (site-packages inputs outputs)
"Return the path of the current output's Python site-package."
- (let* ((out (assoc-ref outputs "out"))
+ (let* ((out (python-output outputs))
(python (assoc-ref inputs "python")))
(string-append out "/lib/python"
(python-version python)
@@ -175,7 +181,7 @@ when running checks after installing the package."
(define* (install #:key outputs (configure-flags '()) use-setuptools?
#:allow-other-keys)
"Install a given Python package."
- (let* ((out (assoc-ref outputs "out"))
+ (let* ((out (python-output outputs))
(params (append (list (string-append "--prefix=" out))
(if use-setuptools?
;; distutils does not accept these flags
@@ -199,12 +205,8 @@ when running checks after installing the package."
(string-append dir "/sbin"))))
outputs))
- (let* ((out (assoc-ref outputs "out"))
- (python (assoc-ref inputs "python"))
- (var `("PYTHONPATH" prefix
- ,(cons (string-append out "/lib/python"
- (python-version python)
- "/site-packages")
+ (let* ((var `("PYTHONPATH" prefix
+ ,(cons (site-packages inputs outputs)
(search-path-as-string->list
(or (getenv "PYTHONPATH") ""))))))
(for-each (lambda (dir)
@@ -220,11 +222,7 @@ installed with setuptools."
;; Even if the "easy-install.pth" is not longer created, we kept this phase.
;; There still may be packages creating an "easy-install.pth" manually for
;; some good reason.
- (let* ((out (assoc-ref outputs "out"))
- (python (assoc-ref inputs "python"))
- (site-packages (string-append out "/lib/python"
- (python-version python)
- "/site-packages"))
+ (let* ((site-packages (site-packages inputs outputs))
(easy-install-pth (string-append site-packages "/easy-install.pth"))
(new-pth (string-append site-packages "/" name ".pth")))
(when (file-exists? easy-install-pth)
--
2.26.2
- [bug#40469] [PATCH core-updates v2 1/2] build-system/python: Install to the python output if present.,
Jakub Kądziołka <=