bug#57005: [PATCH v3] gnu: petsc: scrub build machine specifics

[Lars Bilke]

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

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

Also merged all add-after 'install phases into `clean-install.

Change-Id: I41d82339e43187d7dc7e3fc189a338784c363c68

sort source files in generated makefiles for reproducibility

Change-Id: I86e5b9cd0d7184019617bd8ae9a23eaf459891d7
---
 gnu/packages/maths.scm | 46 +++++++++++++++++++-----------------------
 1 file changed, 21 insertions(+), 25 deletions(-)

diff --git a/gnu/packages/maths.scm b/gnu/packages/maths.scm
index 1f61ee0583..b828d5d5cb 100644
--- a/gnu/packages/maths.scm
+++ b/gnu/packages/maths.scm
@@ -3447,6 +3447,9 @@ (define-public petsc
               (let* ((prefix (assoc-ref outputs "out"))
                      (flags `(,(string-append "--prefix=" prefix)
                               ,@configure-flags)))
+                ;; sort source files in configure (for reproducibility)
+                (substitute* "config/gmakegen.py"
+                   (("join\\(srcs\\[lang\\]\\)") "join(sorted(srcs[lang]))"))
                 (format #t "build directory: ~s~%" (getcwd))
                 (format #t "configure flags: ~s~%" flags)
                 (apply invoke "./configure" flags)
@@ -3455,30 +3458,34 @@ (define-public petsc
                 (substitute* "config/example_template.py"
                   (("#!/usr/bin/env bash")
                    (string-append "#!" (which "bash")))))))
-          (add-after 'configure 'clean-local-references
-            (lambda* (#:key outputs #:allow-other-keys)
+          (add-after 'install 'clean-install
+            ;; Try to keep installed files from leaking build directory names.
+            (lambda* (#:key inputs outputs #:allow-other-keys)
               (let ((out (assoc-ref outputs "out")))
-                (substitute* (find-files "." "^petsc(conf|machineinfo).h$")
+                (substitute* (find-files "." "petscmachineinfo.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")))))
-          (add-after 'install 'clean-install
-            ;; Try to keep installed files from leaking build directory names.
-            (lambda* (#:key inputs outputs #:allow-other-keys)
-              (let ((out (assoc-ref outputs "out")))
+                  (("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"))
                 (substitute* (map (lambda (file)
                                     (string-append out "/lib/petsc/conf/" 
file))
                                   '("petscvariables"))
                   (((getcwd)) out))
-                ;; Make compiler references point to the store
                 (substitute* (string-append out 
"/lib/petsc/conf/petscvariables")
-                  (("= (gcc|g\\+\\+|gfortran)" _ compiler)
-                   (string-append "= " (which compiler))))
+                  ;; Do not retain a reference to GCC and other build only 
inputs.
+                  (("([[:graph:]]+)/bin/gcc") "gcc")
+                  (("([[:graph:]]+)/bin/g\\+\\+") "g++")
+                  (("([[:graph:]]+)/bin/make") "make")
+                  (("([[:graph:]]+)/bin/diff") "diff")
+                  (("([[:graph:]]+)/bin/sed") "sed")
+                  (("([[:graph:]]+)/bin/gfortran") "gfortran"))
                 ;; PETSc installs some build logs, which aren't necessary.
                 (for-each (lambda (file)
                             (let ((f (string-append out "/lib/petsc/conf/" 
file)))
@@ -3490,17 +3497,6 @@ (define-public petsc
                             "configure-hash"
                             ;; Once installed, should uninstall with Guix
                             "uninstall.py")))))
-          (add-after 'clean-install 'clear-reference-to-compiler
-            (lambda* (#:key inputs outputs #:allow-other-keys)
-              ;; Do not retain a reference to GCC and other build only inputs.
-              (let ((out (assoc-ref outputs "out")))
-              (substitute* (string-append out "/lib/petsc/conf/petscvariables")
-                (("([[:graph:]]+)/bin/gcc") "gcc")
-                (("([[:graph:]]+)/bin/g\\+\\+") "g++")
-                (("([[:graph:]]+)/bin/make") "make")
-                (("([[:graph:]]+)/bin/diff") "diff")
-                (("([[:graph:]]+)/bin/sed") "sed")
-                (("([[:graph:]]+)/bin/gfortran") "gfortran")))))
           (add-after 'install 'move-examples
             (lambda* (#:key outputs #:allow-other-keys)
               (let* ((out (assoc-ref outputs "out"))

base-commit: 75bad75367fcf2c289fae3b40dbcc850f92177be
-- 
2.43.0