'Libraries compiled on' does not have to be removed since PETSc 3.9:

https: //gitlab.com/petsc/petsc/-/commit/a970bd748978a4e12790be7c36b10e832ec0149f

Change-Id: I41d82339e43187d7dc7e3fc189a338784c363c68

---
gnu/packages/maths.scm | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/gnu/packages/maths.scm b/gnu/packages/maths.scm
index 1f61ee0583..f09cbee48b 100644
--- a/gnu/packages/maths.scm
+++ b/gnu/packages/maths.scm
@@ -3455,18 +3455,21 @@ (define-public petsc
(substitute* "config/example_template.py"
(("#!/usr/bin/env bash")
(string-append "#!" (which "bash")))))))
- (add-after 'configure 'clean-local-references
+ (add-after 'install 'clean-local-references
(lambda* (#:key outputs #:allow-other-keys)
(let ((out (assoc-ref outputs "out")))
(substitute* (find-files "." "^petsc(conf|machineinfo).h$")
;; Prevent build directory from leaking into compiled code
(((getcwd)) out)
- ;; Scrub timestamp for reproducibility
- ((".*Libraries compiled on.*") ""))
+ ;; Scrub build machine characteristic
+ (("Machine characteristics: Linux-[0-9]+\\.[0-9]+\\.[0-9]+")
+ "Machine characteristics: Linux-x.x.x"))
(substitute* (find-files "." "petscvariables")
;; Do not expose build machine characteristics, set to defaults.
- (("MAKE_NP = [:digit:]+") "MAKE_NP = 2")
- (("NPMAX = [:digit:]+") "NPMAX = 2")))))
+ (("MAKE_NP = [[:digit:]]+") "MAKE_NP = 2")
+ (("MAKE_TEST_NP = [[:digit:]]+") "MAKE_TEST_NP = 2")
+ (("MAKE_LOAD = [[:digit:]]+\\.[[:digit:]]+") "MAKE_LOAD = 2.0")
+ (("NPMAX = [[:digit:]]+") "NPMAX = 2")))))
(add-after 'install 'clean-install
;; Try to keep installed files from leaking build directory names.
(lambda* (#:key inputs outputs #:allow-other-keys)

base-commit: 75bad75367fcf2c289fae3b40dbcc850f92177be
--