gnu: Add python-pot.

* gnu/packages/machine-learning.scm (python-pot): New variable.

Change-Id: I2a844a41031ce80d46a3ffe03ead9652d5a87348

gnu/packages/machine-learning.scm

@@ -1092,6 +1092,36 @@ It currently houses implementations of
 ")
     (license license:expat))) ; MIT License
 
+(define-public python-pot
+  (package
+    (name "python-pot")
+    (version "0.9.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "pot" version))
+       (sha256
+        (base32 "0hk0dmjgnpwka0a7gyzrcq155wzlvzcrsav3qaizyg0wymzywi4n"))
+       (snippet '(delete-file "ot/lp/emd_wrap.cpp"))))
+    (build-system pyproject-build-system)
+    (propagated-inputs
+     (list python-autograd
+           python-numpy
+           python-pytorch
+           python-pytorch-geometric
+           python-pymanopt
+           python-scikit-learn
+           python-scipy))
+    (native-inputs (list python-cython
+                         python-setuptools
+                         python-wheel))
+    (home-page "https://github.com/PythonOT/POT")
+    (synopsis "Python Optimal Transport Library")
+    (description "This Python library provides several solvers for
+optimization problems related to Optimal Transport for signal, image
+processing and machine learning.")
+    (license license:expat)))
+
 (define-public python-pymanopt
   (package
     (name "python-pymanopt")