pantry/scripts/brewkit/python-venv.sh

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#!/bin/sh
CMD_NAME=$1
PROJECT_NAME=$2
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VERSION=$3
PREFIX=$4
PYTHON_VERSION=$5
PYTHON_VERSION_MAJ=$6
PYTHON_VERSION_MIN=$7
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python -m venv $PREFIX/libexec
cd "$PREFIX"
libexec/bin/pip install -v --no-deps --no-binary :all: --ignore-installed $CMD_NAME
mkdir bin
mv libexec/bin/$CMD_NAME libexec/bin/$CMD_NAME.py
cd bin
ln -s ../libexec/bin/$CMD_NAME $CMD_NAME
cd ../libexec/bin
fix-shebangs.ts *
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cat <<EOF>$CMD_NAME
#!/usr/bin/env bash
self="\${BASH_SOURCE[0]}"
if test -L "\$self"; then
prefix="\$(dirname "\$self")"
suffix="\$(dirname \$(readlink \$self))"
LIBEXEC="\$(cd \$prefix/\$suffix && pwd)"
else
LIBEXEC="\$(cd "\$(dirname "\$self")" && pwd)"
fi
source "\$LIBEXEC/activate"
exec "\$LIBEXEC"/$CMD_NAME.py "\$@"
EOF
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chmod +x $CMD_NAME
rm Activate.ps1 activate.csh activate.fish
sed -i.bak 's|VIRTUAL_ENV=".*"|VIRTUAL_ENV="$(cd "$(dirname "${BASH_SOURCE[0]}")"/.. \&\& pwd)"|' activate
rm activate.bak
# FIXME a lot: this "updates" the `venv` on each run for relocatability
cat <<EOF>>activate
sed -i.bak \\
-e "s|$TEA_PREFIX/python.org/v$PYTHON_VERSION|\$TEA_PREFIX/python.org/v$PYTHON_VERSION_MAJ|" \\
-e 's|bin/python$PYTHON_VERSION_MAJ.$PYTHON_VERSION_MIN|bin/python|' \\
-e "s|$PREFIX/libexec|\$TEA_PREFIX/$PROJECT_NAME/v$VERSION/libexec|" \\
\$VIRTUAL_ENV/pyvenv.cfg
rm \$VIRTUAL_ENV/pyvenv.cfg.bak
EOF
for x in python*; do
ln -sf ../../../../python.org/v$PYTHON_VERSION_MAJ/bin/$x $x
done