commit:     a5fff31f4571e24d25ff87ee528720221253610d
Author:     Ulrich Müller <ulm <AT> gentoo <DOT> org>
AuthorDate: Sun May 23 09:45:56 2021 +0000
Commit:     Ulrich Müller <ulm <AT> gentoo <DOT> org>
CommitDate: Tue May 25 19:56:56 2021 +0000
URL:        https://gitweb.gentoo.org/proj/pms.git/commit/?id=a5fff31f

EAPI 8 has an empty working directory in pkg_* phases

https://bugs.gentoo.org/595030
Signed-off-by: Ulrich Müller <ulm <AT> gentoo.org>

 eapi-differences.tex |  4 ++++
 ebuild-functions.tex | 26 +++++++++++++++++++++-----
 2 files changed, 25 insertions(+), 5 deletions(-)

diff --git a/eapi-differences.tex b/eapi-differences.tex
index f3af563..08c4e9f 100644
--- a/eapi-differences.tex
+++ b/eapi-differences.tex
@@ -111,6 +111,9 @@ Use dependencies & \compactfeatureref{use-deps} &
 \t{!!}\ blockers & \compactfeatureref{bang-strength} &
     * & Strong & Strong & Strong & Strong \\
 
+Working directory in \t{pkg_*} phases & \compactfeatureref{phase-function-dir} 
&
+    Any & Any & Any & Any & Empty \\
+
 \t{S} to \t{WORKDIR} fallback & \compactfeatureref{s-workdir-fallback} &
     * & Conditional & Conditional & Conditional & Conditional \\
 
@@ -494,6 +497,7 @@ EAPI 8 is EAPI 7 with the following changes:
 \item Bash version is 5.0, \featureref{bash-version}.
 \item Selective fetch/mirror restriction, \featureref{uri-restrict}.
 \item \t{IDEPEND}, \featureref{idepend}.
+\item Empty working directory in \t{pkg_*} phase functions, 
\featureref{phase-function-dir}.
 \end{compactitem}
 
 \ChangeWhenAddingAnEAPI{8}

diff --git a/ebuild-functions.tex b/ebuild-functions.tex
index ffdea16..00fd259 100644
--- a/ebuild-functions.tex
+++ b/ebuild-functions.tex
@@ -22,11 +22,13 @@ Ebuilds must not call nor assume the existence of any phase 
functions.
 \subsection{Initial working directories}
 \label{sec:s-to-workdir-fallback}
 
-Some functions may assume that their initial working directory is set to a 
particular location;
-these are noted below. If no initial working directory is mandated, it may be 
set to anything and
-the ebuild must not rely upon a particular location for it. The ebuild 
\emph{may} assume that the
-initial working directory for any phase is a trusted location that may only be 
written to by a
-privileged user and group.
+\featurelabel{phase-function-dir} Some functions may assume that their initial 
working directory is
+set to a particular location; these are noted below. If no initial working 
directory is mandated,
+then for EAPIs listed in table~\ref{tab:function-dirs} as having an empty 
directory, it must be set
+to a dedicated directory that is empty at the start of the function and may be 
read-only. For other
+EAPIs, it may be set to anything. The ebuild must not rely upon a particular 
location for it.
+The ebuild \emph{may} assume that the initial working directory for any phase 
is a trusted location
+that may only be written to by a privileged user and group.
 
 \featurelabel{s-workdir-fallback} Some functions are described as having an 
initial working
 directory of \t{S} with an error or fallback to \t{WORKDIR}\@. For EAPIs 
listed in
@@ -44,6 +46,20 @@ fallback to \t{WORKDIR} is used:
     executed, are in \t{DEFINED_PHASES}.
 \end{compactitem}
 
+\ChangeWhenAddingAnEAPI{8}
+\begin{centertable}{Initial working directory in \t{pkg_*} phase functions for 
EAPIs}
+    \label{tab:function-dirs}
+    \begin{tabular}{ll}
+      \toprule
+      \multicolumn{1}{c}{\textbf{EAPI}} &
+      \multicolumn{1}{c}{\textbf{Initial working directory?}} \\
+      \midrule
+      0, 1, 2, 3, 4, 5, 6, 7  & Any   \\
+      8                       & Empty \\
+      \bottomrule
+    \end{tabular}
+\end{centertable}
+
 \ChangeWhenAddingAnEAPI{8}
 \begin{centertable}{EAPIs with \t{S} to \t{WORKDIR} fallbacks}
     \label{tab:s-fallback-table}

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