* gnu/packages/python.scm (python-2): patch Lib/subprocess.py to use
/nix/.../sh when /bin/sh is not available (most of the time, in Guix chroot)
---
gnu/packages/python.scm | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
diff --git a/gnu/packages/python.scm b/gnu/packages/python.scm
index 8f92dc2..a663b5e 100644
--- a/gnu/packages/python.scm
+++ b/gnu/packages/python.scm
@@ -138,7 +138,24 @@
(with-directory-excursion out
(for-each (cut augment-rpath <> lib)
(find-files "bin" ".*")))))
- %standard-phases)))
+ (alist-replace
+ 'configure
+ (lambda* (#:key outputs #:allow-other-keys #:rest args)
+ (let ((configure (assoc-ref %standard-phases 'configure)))
+ ;; Some libraries try to call subprocess.Popen(), which uses
+ ;; /bin/sh, in their tests. Since /bin/sh is not available in the
+ ;; chroot, the tests fail. Instead of disabling them, add
+ ;; '/nix/.../sh' as an alternative shell. The default shell is
+ ;; still /bin/sh, so the subprocess module works exactly as
+ ;; expected. The extra 'if' condition will slow down things, but
+ ;; not enough to be noticed.
+ (substitute* "Lib/subprocess.py"
+ (("args = \\[\"/bin/sh")
+ (string-append
+ "args = [\"/bin/sh\" if os.path.exists(\"/bin/sh\") else "
+ "\"" (which "sh"))))
+ (apply configure args)))
+ %standard-phases))))
(inputs
`(("bzip2" ,bzip2)
("gdbm" ,gdbm)
--
1.8.4.rc3
