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-rw-r--r--specs/spf-2.0/metadata.mdwn17
1 files changed, 16 insertions, 1 deletions
diff --git a/specs/spf-2.0/metadata.mdwn b/specs/spf-2.0/metadata.mdwn
index 9683fc6..dd0a749 100644
--- a/specs/spf-2.0/metadata.mdwn
+++ b/specs/spf-2.0/metadata.mdwn
@@ -129,7 +129,7 @@ Source Package Version Identifier [src-ver]
In general, the syntax of source package version identifiers is:
- <pkgver>[+sip<siprev>][-<pkgrev>][+<dist>~<distrev>]
+ <pkgver>[+sip<siprev>][-<pkgrev>][+<dist>~<distrev>][~bpu<distnum>+<bpurev>]
`<pkgver>` is the version of the original upstream package or the native
package. It may only consist of lowercase Latin letters, digits, periods,
@@ -162,3 +162,18 @@ to `<dist>` of a new upstream package version, source archive repack, or
distribution packaging revision. It must be a string of one or more digits, the
first of which must be greater than or equal to `1`. (A regular expression for
this is `[1-9][0-9]*`.)
+
+If the package is to be backported from `trunk` or another distribution into a
+different distribution other than `trunk`, the string `~bpu<distnum>+<bpurev>`
+must be included in the version identifier. `<distnum>` is a numeric
+distribution version identifier for the distribution to which the package is
+backported. It must be a string of one or more digits, the first of which must
+be greater than or equal to `1`. (A regular expression for this is
+`[1-9][0-9]*`.) `<bpurev>` is a number that should be incremented on each
+backport to distribution version `<distnum>` while `<pkgver>`, `<siprev>`,
+`<pkgrev>`, `<dist>`, and `<distrev>` remain constant. It should be reset to
+`1` for the first backport to distribution version `<distnum>` of a new upstream
+package version, source archive repack, distribution packaging revision, or
+installation into a distribution other than `trunk`. It must be a string of one
+or more digits, the first of which must be greater than or equal to `1`. (A
+regular expression for this is `[1-9][0-9]*`.)