From 101796e05b7a1800f3a6cd6bbb7b981c0c18654e Mon Sep 17 00:00:00 2001
From: Sharlatan Hellseher <sharlatanus@gmail.com>
Date: Thu, 16 Oct 2025 13:26:43 +0100
Subject: [PATCH] gnu: Add python-scikit-learn-1.6.

* gnu/packages/machine-learning.scm (python-scikit-learn-1.6): New variable.

Change-Id: Ife1120b602163bd2ab316f0047d458480dabb947
---
 gnu/packages/machine-learning.scm | 43 +++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/gnu/packages/machine-learning.scm b/gnu/packages/machine-learning.scm
index 01b7c49de5b..529841aad45 100644
--- a/gnu/packages/machine-learning.scm
+++ b/gnu/packages/machine-learning.scm
@@ -2133,6 +2133,49 @@ computing environments.")
 data analysis.")
     (license license:bsd-3)))
 
+;; 1.7 intorduced breaking changes in API.
+(define-public python-scikit-learn-1.6
+  (package
+    (inherit python-scikit-learn)
+    (name "python-scikit-learn")
+    (version "1.6.1")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+              (url "https://github.com/scikit-learn/scikit-learn")
+              (commit version)))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "08z1b58n31grfvl42wi6rdwrfhrdhnzkkxhg19iag3zkvkcvxqjl"))))
+    (arguments
+     (substitute-keyword-arguments (package-arguments python-scikit-learn)
+       ((#:test-flags flags)
+        #~(list "--numprocesses" (number->string (min 8 (parallel-job-count)))
+                "-m" "not network"
+                "-k" (string-join
+                      (list "not test_ard_accuracy_on_easy_problem"
+                            "test_check_inplace_ensure_writeable"
+                            "test_check_is_fitted_with_attributes"
+                            "test_covariance"
+                            "test_estimators"
+                            "test_ledoit_wolf"
+                            "test_mcd"
+                            "test_mcd_issue1127"
+                            "test_mcd_support_covariance_is_zero"
+                            "test_oas"
+                            "test_shrunk_covariance"
+                            "test_toy_ard_object")
+                      " and not ")))
+       ((#:phases phases)
+        #~(modify-phases #$phases
+            (add-after 'unpack 'remove-broken-tests
+              (lambda _
+                ;; ImportError: cannot import name 'ColMajor' from
+                ;; 'sklearn.utils._cython_blas'
+                ;; (<...>/_cython_blas.cpython-311-x86_64-linux-gnu.so)
+                (delete-file-recursively "sklearn/utils/tests/test_cython_blas.py")))))))))
+
 (define-public python-scikit-learn-extra
   ;; This commit fixes an incompatibility with newer versions of scikit-learn
   (let ((commit "0f95d8dda4c69f9de4fb002366041adcb1302f3b")