[bug#50505] [PATCH v3 03/12] gnu: Add python-glcontext.

[Liliana Marie Prikler <liliana.prikler@gmail.com>]

Am Sonntag, dem 02.01.2022 um 00:51 +0100 schrieb Daniel Meißner:
> * gnu/packages/python-xyz.scm (python-glcontext): New variable.
> ---
>  gnu/packages/python-xyz.scm | 53 +++++++++++++++++++++++++++++++++++++
>  1 file changed, 53 insertions(+)
> 
> diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
> index deff85e797..d8e6fa070e 100644
> --- a/gnu/packages/python-xyz.scm
> +++ b/gnu/packages/python-xyz.scm
> @@ -19555,6 +19555,59 @@ (define-public python-pyopengl-accelerate
>      (description
>       "This is the Cython-coded accelerator module for PyOpenGL.")))
>  
> +(define-public python-glcontext
> +  (package
> +   (name "python-glcontext")
> +   (version "2.3.4")
> +   (source
> +    (origin
> +     (method git-fetch)
> +     (uri (git-reference
> +           (url "https://github.com/moderngl/glcontext")
> +           (commit version)))
> +     (file-name (git-file-name name version))
> +     (sha256
> +      (base32
> +       "1m2zkl696vqmgrd5k1c5kl0krk6qgjgsz88qhahwva0l40bswvhp"))))
> +   (build-system python-build-system)
> +   (arguments
> +    '(#:phases
> +      (modify-phases %standard-phases
> +        (add-before 'build 'fix-lib-paths
> +          (lambda* (#:key inputs outputs #:allow-other-keys)
> +            (let ((mesa (assoc-ref inputs "mesa"))
> +                  (libx11 (assoc-ref inputs "libx11")))
> +              (substitute* '("glcontext/x11.cpp" "glcontext/egl.cpp")
> +                (("\"libGL.so\"")
> +                 (string-append "\"" mesa  "/lib/libGL.so\""))
> +                (("\"libEGL.so\"")
> +                 (string-append "\"" mesa "/lib/libEGL.so\""))
> +                (("\"libX11.so\"")
> +                 (string-append "\"" libx11 "/lib/libX11.so\"")))
> +              (substitute* '("glcontext/__init__.py")
> +                (("find_library\\('GL'\\)")
> +                 (string-append "'" mesa "/lib/libGL.so'"))
> +                (("find_library\\('EGL'\\)")
> +                 (string-append "'" mesa "/lib/libEGL.so'"))
> +                (("find_library\\(\"X11\"\\)")
> +                 (string-append "'" libx11 "/lib/libX11.so'"))))))
Use of (assoc-ref inputs input) in new code is discouraged in favour of
this-package-input or search-input-file.  Leo Famulari started a thread
on which of the two to prefer over in guix-devel [1].  My personal
opinion is that search-input-file ought to be fine here.

[1] https://lists.gnu.org/archive/html/guix-devel/2021-12/msg00240.html