[latex3-commits] [l3svn] branch master updated: l3build: Add "epoch" variable

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joseph pushed a commit to branch master
in repository l3svn.

The following commit(s) were added to refs/heads/master by this push:
       new  16d63a4   l3build: Add "epoch" variable
16d63a4 is described below

commit 16d63a4efb0f0afc9ba5ffb8e9b36e27e76c4fd9
Author: Joseph Wright <joseph.wright at morningstar2.co.uk>
Date:   Fri May 20 23:09:46 2016 +0100

    l3build: Add "epoch" variable
    
    First step in making reproducible PDF builds for testing.
---
 l3build/l3build.dtx |    1 +
 l3build/l3build.lua |    5 +++++
 2 files changed, 6 insertions(+)

diff --git a/l3build/l3build.dtx b/l3build/l3build.dtx
index 4b2fb0b..3907b01 100644
--- a/l3build/l3build.dtx
+++ b/l3build/l3build.dtx
@@ -154,6 +154,7 @@
 \luavarseparator
 \luavarset{asciiengines}{\{"pdftex"\}}{Engines which should log as sure ASCII}
 \luavarset{checkruns}   {1}           {How many times to run a check file before comparing the log.}
+\luavarset{epoch}       {1463734800}  {Epoch (Unix date) to set for test runs.}
 \luavarset{maxprintline}{79}          {Length of line to use in log files.}
 \luavarset{packtdszip}  {false}       {Build a TDS-style zip file for CTAN?}
 \luavarset{scriptname}  {"build.lua"} {Name of script used in dependencies.}
diff --git a/l3build/l3build.lua b/l3build/l3build.lua
index e15a2b6..7bfb27f 100644
--- a/l3build/l3build.lua
+++ b/l3build/l3build.lua
@@ -149,6 +149,7 @@ makeindexopts = makeindexopts or ""
 -- Other required settings
 asciiengines = asciiengines or {"pdftex"}
 checkruns    = checkruns    or 1
+epoch        = epoch        or 1463734800
 maxprintline = maxprintline or 79
 packtdszip   = packtdszip   or false -- Not actually needed but clearer
 scriptname   = scriptname   or "build.lua" -- Script used in each directory
@@ -1180,6 +1181,10 @@ function runtest(name, engine, hide, ext)
       -- Avoid spurious output from (u)pTeX
       os_setenv .. " GUESS_INPUT_KANJI_ENCODING=0"
         .. os_concat ..
+      -- Fix the time of the run
+      os_setenv .. " SOURCE_DATE_EPOCH=" .. epoch
+        .. " SOURCE_DATE_EPOCH_TEX_PRIMITIVES=1"
+        .. os_concat ..
       -- Ensure lines are of a known length
       os_setenv .. " max_print_line=" .. maxprintline
         .. os_concat ..

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