* Jochen Sprickerhof <[email protected]> [2026-07-13 17:22]:
Source: rakudo Version: 2024.09-4 Severity: normal Tags: patch X-Debbugs-Cc: [email protected] User: [email protected] Usertags: randomnessHi, Rakudo captures the file timestamp into the metadata when compiling modules. This is normally fine except fore files that are touched by debian/patches. Examples: https://reproduce.debian.net/all/api/v1/builds/176802/artifacts/336780/diffoscope https://reproduce.debian.net/all/api/v1/builds/180915/artifacts/344761/diffoscope https://reproduce.debian.net/all/api/v1/builds/180660/artifacts/344452/diffoscope https://reproduce.debian.net/all/api/v1/builds/177031/artifacts/337508/diffoscope dpkg can't clamp the timestamp to a specific date as that could break make, so instead I propose to use $SOURCE_DATE_EPOCH in the metadata instead. The attached patch implements this.
Guillem proposed to only clamp newer timestamps, alternative patch attached.
Obviously there is a third option to drop the time entry as it seems to be optionsl. I don't know how it is used, so I leave the decision to the maintainer.
Cheers Jochen
From db4cb1925d12c8ba4ac642df07c657995bb02265 Mon Sep 17 00:00:00 2001 From: Jochen Sprickerhof <[email protected]> Date: Mon, 13 Jul 2026 17:10:36 +0200 Subject: [PATCH] Clamp timestamp in metadata with SOURCE_DATE_EPOCH --- ...p-in-metadata-with-SOURCE_DATE_EPOCH.patch | 35 +++++++++++++++++++ debian/patches/series | 1 + 2 files changed, 36 insertions(+) create mode 100644 debian/patches/0005-Clamp-timestamp-in-metadata-with-SOURCE_DATE_EPOCH.patch diff --git a/debian/patches/0005-Clamp-timestamp-in-metadata-with-SOURCE_DATE_EPOCH.patch b/debian/patches/0005-Clamp-timestamp-in-metadata-with-SOURCE_DATE_EPOCH.patch new file mode 100644 index 00000000..c3fcfd17 --- /dev/null +++ b/debian/patches/0005-Clamp-timestamp-in-metadata-with-SOURCE_DATE_EPOCH.patch @@ -0,0 +1,35 @@ +From: Jochen Sprickerhof <[email protected]> +Date: Mon, 13 Jul 2026 16:04:36 +0200 +Subject: Clamp timestamp in metadata with SOURCE_DATE_EPOCH + +This makes it reproducible. +--- + src/core.c/CompUnit/Repository/Installation.rakumod | 9 ++++++++- + 1 file changed, 8 insertions(+), 1 deletion(-) + +diff --git a/src/core.c/CompUnit/Repository/Installation.rakumod b/src/core.c/CompUnit/Repository/Installation.rakumod +index 8eab364..7953e1f 100644 +--- a/src/core.c/CompUnit/Repository/Installation.rakumod ++++ b/src/core.c/CompUnit/Repository/Installation.rakumod +@@ -264,13 +264,20 @@ sub MAIN(*@, *%) { + my $destination = $sources-dir.add($id); + my $handle = $dist.content($file); + my $content = $handle.open(:bin).slurp(:close); ++ my $time = try { $file.IO.modified.Num} // 0; ++ ++ if %*ENV<SOURCE_DATE_EPOCH> -> $source_date_epoch { ++ if $time > $source_date_epoch.Num { ++ $time = $source_date_epoch.Num; ++ } ++ } + + self!add-short-name($name, $dist, $id, + nqp::sha1(nqp::join("\n", nqp::split("\r\n", + $content.decode('iso-8859-1'))))); + %provides{ $name } = ~$file => { + :file($id), +- :time(try $file.IO.modified.Num), ++ :time($time), + }; + note("Installing {$name} for {$dist.meta<name>}") if $verbose and $name ne $dist.meta<name>; + $destination.spurt($content); diff --git a/debian/patches/series b/debian/patches/series index 89868a84..05dbac28 100644 --- a/debian/patches/series +++ b/debian/patches/series @@ -2,3 +2,4 @@ fix-script-path fix-perf-test fix-test fix-compiler-id +0005-Clamp-timestamp-in-metadata-with-SOURCE_DATE_EPOCH.patch -- 2.53.0
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