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| author |   Ulrich Müller <ulm@kph.uni-mainz.de> | 2017-10-10 12:19:31 +0200 |
|---|---|---|
| committer | Ulrich Müller <ulm@kph.uni-mainz.de> | 2017-10-10 12:28:30 +0200 |
| commit | 04e3e077a99e337cb9b9f0d6e710037ba488b6bb (patch) | |
| tree | 21fa91b1c82742d51ba41cd24e943403788bc135 | |
| parent | Ban empty groups in dependency specifications. (diff) | |
| download | pms-04e3e077.tar.gz pms-04e3e077.tar.bz2 pms-04e3e077.zip | |
Appendix: Document retroactive ban of empty dependency groups.
Bug: https://bugs.gentoo.org/370565
| -rw-r--r-- | appendices.tex | 6 | ||||
| -rw-r--r-- | dependencies.tex | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/appendices.tex b/appendices.tex index 7227fc8..60e3512 100644 --- a/appendices.tex +++ b/appendices.tex @@ -104,6 +104,12 @@ implementation in package managers deviated from what was specified. String prefix matching was effective in EAPIs \t{0}, \t{1}, \t{2}, \t{3}, \t{4} and \t{5}. It was retroactively dropped in favour of the current behaviour in October 2015. +\subsection{Empty dependency groups} +The dependency specification format (see section~\ref{sec:dependency-spec}) originally permitted +all-of, any-of, exactly-one-of, at-most-one-of and use-conditional groups with zero sub-elements. +However, such empty groups were neither supported by all package managers nor used in ebuilds. +They were dropped from the specification in October 2017. + % vim: set filetype=tex fileencoding=utf8 et tw=100 spell spelllang=en : %%% Local Variables: diff --git a/dependencies.tex b/dependencies.tex index ed3ea01..093a30b 100644 --- a/dependencies.tex +++ b/dependencies.tex @@ -45,6 +45,7 @@ In addition, \t{SRC_URI}, \t{HOMEPAGE}, \t{RESTRICT}, \t{PROPERTIES}, \t{LICENSE \t{REQUIRED_USE} use dependency-style specifications to specify their values. \section{Dependency Specification Format} +\label{sec:dependency-spec} The following elements are recognised in at least one class of specification. All elements must be surrounded on both sides by whitespace, except at the start and end of the string. |