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# Wrapper around wrapPythonProgramsIn, below. The $pythonPath
# variable is passed in from the buildPythonPackage function.
wrapPythonPrograms() {
wrapPythonProgramsIn $out "$out $pythonPath"
}
# Transforms any binaries generated by the setup.py script, replacing them
# with an executable shell script which will set some environment variables
# and then call into the original binary (which has been given a .wrapped
# suffix).
wrapPythonProgramsIn() {
local dir="$1"
local pythonPath="$2"
local python="@executable@"
local path
local f
# Create an empty table of python paths (see doc on _addToPythonPath
# for how this is used). Build up the program_PATH and program_PYTHONPATH
# variables.
declare -A pythonPathsSeen=()
program_PYTHONPATH=
program_PATH=
for path in $pythonPath; do
_addToPythonPath $path
done
# Find all regular files in the output directory that are executable.
for f in $(find "$dir" -type f -perm -0100); do
# Rewrite "#! .../env python" to "#! /nix/store/.../python".
if head -n1 "$f" | grep -q '#!.*/env.*\(python\|pypy\)'; then
sed -i "$f" -e "1 s^.*/env[ ]*\(python\|pypy\)^#! $python^"
fi
# catch /python and /.python-wrapped
if head -n1 "$f" | grep -q '/\.\?\(python\|pypy\)'; then
# dont wrap EGG-INFO scripts since they are called from python
if echo "$f" | grep -qv EGG-INFO/scripts; then
echo "wrapping \`$f'..."
# The magicalSedExpression will invoke a "$(basename "$f")", so
# if you change $f to something else, be sure to also change it
# in pkgs/top-level/python-packages.nix!
sed -i "$f" -re '@magicalSedExpression@'
# wrapProgram creates the executable shell script described
# above. The script will set PYTHONPATH and PATH variables.!
# (see pkgs/build-support/setup-hooks/make-wrapper.sh)
local wrap_args="$f \
--prefix PYTHONPATH ':' $program_PYTHONPATH \
--prefix PATH ':' $program_PATH:$dir/bin"
# Add any additional arguments provided by makeWrapperArgs
# argument to buildPythonPackage.
for arg in $makeWrapperArgs; do
wrap_args="$wrap_args $arg"
done
wrapProgram $wrap_args
fi
fi
done
}
# Adds the lib and bin directories to the PYTHONPATH and PATH variables,
# respectively. Recurses on any paths declared in
# `propagated-native-build-inputs`, while avoiding duplicating paths by
# flagging the directories it has visited in `pythonPathsSeen`.
_addToPythonPath() {
local dir="$1"
# Stop if we've already visited here.
if [ -n "${pythonPathsSeen[$dir]}" ]; then return; fi
pythonPathsSeen[$dir]=1
# addToSearchPath is defined in stdenv/generic/setup.sh. It will have
# the effect of calling `export program_X=$dir/...:$program_X`.
addToSearchPath program_PYTHONPATH $dir/lib/@libPrefix@/site-packages
addToSearchPath program_PATH $dir/bin
# Inspect the propagated inputs (if they exist) and recur on them.
local prop="$dir/nix-support/propagated-native-build-inputs"
if [ -e $prop ]; then
local new_path
for new_path in $(cat $prop); do
_addToPythonPath $new_path
done
fi
}
createBuildInputsPth() {
local category="$1"
local inputs="$2"
if [ foo"$inputs" != foo ]; then
for x in $inputs; do
if $(echo -n $x |grep -q python-recursive-pth-loader); then
continue
fi
if test -d "$x"/lib/@libPrefix@/site-packages; then
echo $x/lib/@libPrefix@/site-packages \
>> "$out"/lib/@libPrefix@/site-packages/${name}-nix-python-$category.pth
fi
done
fi
}
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