[build-path-prefix-map-spec] 02/03: More precisely specify how producers should set this variable

[Ximin Luo]

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infinity0 pushed a commit to branch master
in repository build-path-prefix-map-spec.

commit f1b80a834fe5c3cea5899c48a21d02cb38b260ed
Author: Ximin Luo <infinity0 at debian.org>
Date:   Tue Mar 21 12:20:09 2017 +0100

    More precisely specify how producers should set this variable
---
 build-path-prefix-map-spec.in.rst | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/build-path-prefix-map-spec.in.rst b/build-path-prefix-map-spec.in.rst
index a057cca..f0afd04 100644
--- a/build-path-prefix-map-spec.in.rst
+++ b/build-path-prefix-map-spec.in.rst
@@ -165,8 +165,10 @@ Setting the encoded value
 Producers SHOULD NOT overwrite existing values; instead they should append
 their new mappings onto the right of any existing value.
 
-Each individual mapping has the reproducible *target* path prefix on the left,
-and the unreproducible *source* path prefix on the right.
+Producers that expect reproducible output MUST append at least one distinct
+mapping for each top-level directory that the build is expected to take place
+under. Each mapping has the reproducible *target* path prefix on the left, and
+the unreproducible *source* path prefix on the right.
 
 Producers who build *general software* that uses this variable, MUST NOT expect
 any special contracts on the output emitted by *general consumers* based on

-- 
Alioth's /usr/local/bin/git-commit-notice on /srv/git.debian.org/git/reproducible/build-path-prefix-map-spec.git