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-rw-r--r--gnu/packages/statistics.scm35
1 files changed, 34 insertions, 1 deletions
diff --git a/gnu/packages/statistics.scm b/gnu/packages/statistics.scm
index 3a26e23053..d8e50b9984 100644
--- a/gnu/packages/statistics.scm
+++ b/gnu/packages/statistics.scm
@@ -134,11 +134,44 @@ be output in text, PostScript, PDF or HTML.")
#t))
(add-after 'unpack 'build-reproducibly
(lambda _
- ;; Ensure that gzipped files are reproducible
+ ;; The documentation contains time stamps to demonstrate
+ ;; documentation generation in different phases.
+ (substitute* "src/library/tools/man/Rd2HTML.Rd"
+ (("\\\\%Y-\\\\%m-\\\\%d at \\\\%H:\\\\%M:\\\\%S")
+ "(removed for reproducibility)"))
+
+ ;; Remove timestamp from tracing environment. This fixes
+ ;; reproducibility of "methods.rd{b,x}".
+ (substitute* "src/library/methods/R/trace.R"
+ (("dateCreated = Sys.time\\(\\)")
+ "dateCreated = as.POSIXct(\"1970-1-1 00:00:00\", tz = \"UTC\")"))
+
+ ;; Ensure that gzipped files are reproducible.
(substitute* '("src/library/grDevices/Makefile.in"
"doc/manual/Makefile.in")
(("R_GZIPCMD\\)" line)
(string-append line " -n")))
+
+ ;; The "srcfile" procedure in "src/library/base/R/srcfile.R"
+ ;; queries the mtime of a given file and records it in an object.
+ ;; This is acceptable at runtime to detect stale source files,
+ ;; but it destroys reproducibility at build time.
+ ;;
+ ;; Instead of disabling this feature, which may have unexpected
+ ;; consequences, we reset the mtime of generated files before
+ ;; passing them to the "srcfile" procedure.
+ (substitute* "src/library/Makefile.in"
+ (("@\\(cd base && \\$\\(MAKE\\) mkdesc\\)" line)
+ (string-append line "\n find $(top_builddir)/library/tools | xargs touch -d '1970-01-01'; \n"))
+ (("@\\$\\(MAKE\\) Rdobjects" line)
+ (string-append "@find $(srcdir)/tools | xargs touch -d '1970-01-01'; \n "
+ line)))
+ (substitute* "src/library/tools/Makefile.in"
+ (("@\\$\\(INSTALL_DATA\\) all.R \\$\\(top_builddir\\)/library/\\$\\(pkg\\)/R/\\$\\(pkg\\)" line)
+ (string-append
+ line
+ "\n find $(srcdir)/$(pkg) $(top_builddir)/library/$(pkg) | xargs touch -d \"1970-01-01\"; \n")))
+
;; This library is installed using "install_package_description",
;; so we need to pass the "builtStamp" argument.
(substitute* "src/library/tools/Makefile.in"