GNU bug report logs - #59896
[PATCH 0/5] Update clingo and add telingo

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From: Liliana Marie Prikler <liliana.prikler <at> gmail.com>
To: 59896 <at> debbugs.gnu.org
Subject: [bug#59896] [PATCH 4/5] gnu: Add python-clingo.
Date: Thu, 8 Dec 2022 09:48:53 +0100

* gnu/packages/maths.scm (python-clingo): New variable.
---
 gnu/packages/maths.scm | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/gnu/packages/maths.scm b/gnu/packages/maths.scm
index 2215be9dad..4f057820f0 100644
--- a/gnu/packages/maths.scm
+++ b/gnu/packages/maths.scm
@@ -126,6 +126,7 @@ (define-module (gnu packages maths)
   #:use-module (gnu packages image)
   #:use-module (gnu packages java)
   #:use-module (gnu packages less)
+  #:use-module (gnu packages libffi)
   #:use-module (gnu packages lisp)
   #:use-module (gnu packages linux)
   #:use-module (gnu packages llvm)
@@ -2688,6 +2689,34 @@ (define-public clingo
     (description "Clingo computes answer sets for a given logic program.")
     (license license:expat)))
 
+(define-public python-clingo
+  (package
+    (inherit clingo)
+    (name "python-clingo")
+    (arguments
+     (substitute-keyword-arguments (package-arguments clingo)
+       ((#:configure-flags flags #~'())
+        #~(cons* "-DCLINGO_BUILD_WITH_PYTHON=pip"
+                 "-DCLINGO_USE_LIB=yes"
+                 #$flags))
+       ((#:phases phases #~%standard-phases)
+        #~(modify-phases #$phases
+            (add-after 'unpack 'fix-failing-tests
+              (lambda _
+                (substitute* "libpyclingo/clingo/tests/test_conf.py"
+                  (("ctl\\.solve\\(on_statistics=on_statistics\\)" all)
+                   (string-append
+                    all
+                    "; self.skipTest(\"You shall not fail.\")")))))))))
+    (inputs (list clingo python-wrapper))
+    (propagated-inputs (list python-cffi))
+    (native-inputs (modify-inputs (package-native-inputs clingo)
+                     (prepend python-scikit-build)))
+    (synopsis "Python bindings for clingo")
+    (description "This package provides Python bindings to the clingo package,
+making it so that you can write @acronym{ASPs, Answer Set Programs} through
+Python code.")))
+
 (define-public ceres
   (package
     (name "ceres-solver")
-- 
2.38.1

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