guix: python-build-system: Add helpers for getting and setting PYTHONPATH.
* guix/build/python-build-system.scm (add-installed-pythonpath, site-packages): New exported procedures.
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@ -28,6 +28,8 @@
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-26)
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#:use-module (srfi srfi-26)
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#:export (%standard-phases
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#:export (%standard-phases
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add-installed-pythonpath
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site-packages
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python-build))
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python-build))
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;; Commentary:
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;; Commentary:
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@ -76,6 +78,24 @@
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(major+minor (take components 2)))
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(major+minor (take components 2)))
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(string-join major+minor ".")))
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(string-join major+minor ".")))
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(define (site-packages inputs outputs)
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"Return the path of the current output's Python site-package."
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(let* ((out (assoc-ref outputs "out"))
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(python (assoc-ref inputs "python")))
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(string-append out "/lib/python"
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(get-python-version python)
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"/site-packages/")))
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(define (add-installed-pythonpath inputs outputs)
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"Prepend the Python site-package of OUTPUT to PYTHONPATH. This is useful
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when running checks after installing the package."
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(let ((old-path (getenv "PYTHONPATH"))
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(add-path (site-packages inputs outputs)))
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(setenv "PYTHONPATH"
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(string-append add-path
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(if old-path (string-append ":" old-path) "")))
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#t))
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(define* (install #:key outputs (configure-flags '()) use-setuptools?
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(define* (install #:key outputs (configure-flags '()) use-setuptools?
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#:allow-other-keys)
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#:allow-other-keys)
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"Install a given Python package."
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"Install a given Python package."
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