Patch originally from https://sources.debian.net/patches/erlang/1:20.0.1%2Bdfsg-2/man.patch/
by Francois-Denis Gonthier <neumann@lostwebsite.net>.

Patch description rewritten for Guix.

This patch allows access to the man page with the 'erl -man' command
(Erlang manual pages are placed to /gnu/store/..erlang../share/man/ hierarchy
as other man pages.)

--- a/erts/etc/common/erlexec.c
+++ b/erts/etc/common/erlexec.c
@@ -728,8 +728,10 @@ int main(int argc, char **argv)
                                 break;
                             }
                         }
-			erts_snprintf(tmpStr, sizeof(tmpStr), "%s/man", rootdir);
-			set_env("MANPATH", tmpStr);
+			/*
+			* Conform to erlang-manpages content.
+			*/
+			putenv(strsave("MANSECT=1:3:5:7"));
 			execvp("man", argv+i);
 			error("Could not execute the 'man' command.");
 #endif
ripts'>koszko-scripts</option>
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<div class='path'>path: <a href='/guix/log/?id=38df1a5bcdd6de4cc8948df12355877d2e439260'>root</a>/<a href='/guix/log/build-aux?id=38df1a5bcdd6de4cc8948df12355877d2e439260'>build-aux</a>/<a href='/guix/log/build-aux/update-guix-package.scm?id=38df1a5bcdd6de4cc8948df12355877d2e439260'>update-guix-package.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/build-aux/update-guix-package.scm?id=38df1a5bcdd6de4cc8948df12355877d2e439260&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2018-12-07 15:14:12 +0100'>2018-12-07</span></td><td><a href='/guix/commit/build-aux/update-guix-package.scm?id=6eac835f178c0c78637b0db8a4585a617b2f7622'>maint: update-guix-package: Really register GC roots.</a><span class='msg-avail'>...<span class='msg-tooltip'>Previously we'd pass a relative file name to 'add-indirect-root', which
the daemon would interpret as relative to "/".  Consequently, checkouts
were not protected from GC.

* build-aux/update-guix-package.scm (main): Pass an absolute file name
to 'add-indirect-root'.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-05-09 12:58:42 +0200'>2017-05-09</span></td><td><a href='/guix/commit/build-aux/update-guix-package.scm?id=aa1c3a0000793873ef31f33f8aa90f5ae1ab8b8d'>maint: update-guix-package: Protect the checkout from GC.</a><span class='msg-avail'>...<span class='msg-tooltip'>* build-aux/update-guix-package.scm (main): Define 'root', and call
'add-indirect-root' to protect SOURCE from GC.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-05-07 00:18:36 +0200'>2017-05-07</span></td><td><a href='/guix/commit/build-aux/update-guix-package.scm?id=94fa8d76163bd08e6f680dc300b551f36415687e'>maint: Add 'update-guix-package' target.</a><span class='msg-avail'>...<span class='msg-tooltip'>* build-aux/update-guix-package.scm: New file.
* Makefile.am (EXTRA_DIST): Add it.
(update-guix-package): New target.
(.PHONY): Add it.
* gnu/packages/package-management.scm (guix): Mention it.
</span></span></td><td>Ludovic Courtès</td></tr>