From a69f2cd0769d2f1323773dfb921c527037e9d5ce Mon Sep 17 00:00:00 2001
From: Ricardo Wurmus <rekado@elephly.net>
Date: Mon, 1 Aug 2022 12:44:04 +0200
Subject: gnu: python-umap-learn: Set NUMBA_CACHE_DIR.

* gnu/packages/machine-learning.scm (python-umap-learn)[arguments]: Add phase
to set NUMBA_CACHE_DIR.
---
 gnu/packages/machine-learning.scm | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'gnu')

diff --git a/gnu/packages/machine-learning.scm b/gnu/packages/machine-learning.scm
index b19af8a1d5..1f85aa290f 100644
--- a/gnu/packages/machine-learning.scm
+++ b/gnu/packages/machine-learning.scm
@@ -2750,6 +2750,10 @@ These include a barrier, broadcast, and allreduce.")
      (list
       #:phases
       #~(modify-phases %standard-phases
+          ;; Numba needs a writable dir to cache functions.
+          (add-before 'check 'set-numba-cache-dir
+            (lambda _
+              (setenv "NUMBA_CACHE_DIR" "/tmp")))
           (replace 'check
             (lambda* (#:key tests? #:allow-other-keys)
               (when tests?
-- 
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