From e1bce9a316494f14d059b5afc0e1912832622334 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20G=C3=B3rny?= <mgorny@gentoo.org>
Date: Sat, 11 Jun 2011 09:32:03 +0200
Subject: [PATCH] Rephrase *DEPEND to state when and whether they are
 installed.

---
 dependencies.tex |   27 ++++++++++++++++++++++-----
 1 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/dependencies.tex b/dependencies.tex
index f6318d8..b218579 100644
--- a/dependencies.tex
+++ b/dependencies.tex
@@ -6,13 +6,30 @@
 There are three classes of dependencies supported by ebuilds:
 
 \begin{compactitem}
-\item Build dependencies (\t{DEPEND}). These must be installed and usable before the ebuild
-    is installed.
-\item Runtime dependencies (\t{RDEPEND}). These must be installed and usable before the ebuild
-    is treated as usable.
-\item Post dependencies (\t{PDEPEND}). These must be installed at some point.
+\item Build dependencies (\t{DEPEND}). These must be installed and usable before any of
+	the ebuild \t{src\_*} phase functions is executed. These may not be installed at all
+	if a binary package is being merged.
+\item Runtime dependencies (\t{RDEPEND}). These must be installed and usable before
+	the results of an ebuild merging are treated as usable.
+\item Post dependencies (\t{PDEPEND}). These must be installed at some point before
+	the package manager finishes the batch of installs.
 \end{compactitem}
 
+\begin{centertable}{Dependency classes required to be satisfied for a particular phase function} \label{tab:phase-function-dependency-classes}
+    \begin{tabular}{ p{0.2\textwidth} p{0.7\textwidth} }
+        \toprule
+        \multicolumn{1}{c}{\textbf{Phase function}} &
+        \multicolumn{1}{c}{\textbf{Satisfied dependency classes}} \\
+        \midrule
+	\t{pkg\_pretend}, \t{pkg\_setup}, \t{pkg\_info}, \t{pkg\_nofetch} & None (ebuilds can rely only on the packages in the system set) \\
+    \t{src\_unpack}, \t{src\_prepare}, \t{src\_configure}, \t{src\_compile}, \t{src\_test}, \t{src\_install} & \t{DEPEND} \\
+    \t{pkg\_preinst}, \t{pkg\_postinst}, \t{pkg\_prerm}, \t{pkg\_postrm}, \t{pkg\_config} & \t{RDEPEND} \\
+    \bottomrule
+    \end{tabular}
+\end{centertable}
+
+Table~\ref{tab:phase-function-dependency-classes} lists dependencies which must be satisfied before a particular phase function is executed.
+
 In addition, \t{SRC\_URI}, \t{HOMEPAGE}, \t{PROVIDE}, \t{RESTRICT}, \t{PROPERTIES}, \t{LICENSE} and
 \t{REQUIRED\_USE} use dependency-style specifications to specify their values.
 
-- 
1.7.5.3