[bug#50887] [PATCH] gnu: Add python-fitsio.

[Konrad Hinsen]

Xinglu Chen <public@yoctocell.xyz> writes:

> Could you send an updated patch?

Here it comes. Thanks for the careful code review! I learned a few
things from this: I didn't know about snippets, nor about the subtle
differences between gpl2 and gpl2+.

Thanks,
  Konrad.

>From c95c0b18b4c2da6af7432a3dcf11c5f9984772f8 Mon Sep 17 00:00:00 2001
From: Konrad Hinsen <konrad.hinsen@fastmail.net>
Date: Wed, 29 Sep 2021 10:47:39 +0200
Subject: [PATCH] gnu: Add python-fitsio.

* gnu/packages/astronomy.scm (python-fitsio): New variable.
---
 gnu/packages/astronomy.scm | 65 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)

diff --git a/gnu/packages/astronomy.scm b/gnu/packages/astronomy.scm
index a3f7d5cbf4..287cf4a94c 100644
--- a/gnu/packages/astronomy.scm
+++ b/gnu/packages/astronomy.scm
@@ -96,6 +96,71 @@ in FITS files.")
     (license (license:non-copyleft "file://License.txt"
                           "See License.txt in the distribution."))))
 
+(define-public python-fitsio
+  (package
+    (name "python-fitsio")
+    (version "1.1.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "fitsio" version))
+       (sha256
+        (base32 "1llql2i6xr9lkdl81jx5nvz80kspamvira90546y32ldy551hq1l"))
+       (modules '((guix build utils)))
+       (snippet
+        ;; Remove the bundled cfitsio
+        `(begin
+           (delete-file-recursively "cfitsio3490")
+           (substitute* "MANIFEST.in"
+             (("recursive-include cfitsio3490.*$\n") ""))
+           #t))))
+    (build-system python-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'unbundle-cfitsio
+           (lambda* (#:key inputs #:allow-other-keys)
+             (let* ((cfitsio (assoc-ref inputs "cfitsio"))
+                    (includedir (string-append "\"" cfitsio "/include\""))
+                    (libdir (string-append "\"" cfitsio "/lib\"")))
+               ;; Use Guix' cfitsio instead of the bundled one
+               (substitute* "setup.py"
+                 (("self.use_system_fitsio = False") "pass")
+                 (("self.system_fitsio_includedir = None") "pass")
+                 (("self.system_fitsio_libdir = None") "pass")
+                 (("self.use_system_fitsio") "True")
+                 (("self.system_fitsio_includedir") includedir)
+                 (("self.system_fitsio_libdir") libdir)))))
+         (add-after 'unpack 'skip-bzip2-test
+           (lambda* (#:key inputs #:allow-other-keys)
+             ;; The bzip2 test fails because Guix' cfitsio
+             ;; is built without bzip2 support.
+             (substitute* "fitsio/test.py"
+               (("'SKIP_BZIP_TEST' in os.environ") "True")))))))
+    (propagated-inputs
+     `(("python-numpy" ,python-numpy)
+       ("cfitsio" ,cfitsio)))
+    (home-page "https://github.com/esheldon/fitsio";)
+    (synopsis
+     "Python library to read from and write to FITS files")
+    (description
+     "This package provides a Python library for reading from and writing
+to @acronym{FITS, Flexible Image Transport System} files using the
+CFITSIO library.  Among other things, it can
+
+@itemize
+@item read and write image, binary, and ascii table extensions;
+
+@item read arbitrary subsets of tables in a lazy manner;
+
+@item query the rows and columns of a table;
+
+@item read and write header keywords;
+
+@item read and write Gzip files.
+@end itemize")
+    (license license:gpl2+)))
+
 (define-public qfits
   (package
     (name "qfits")
-- 
2.33.0