perl-installish-module.sh

#!/usr/bin/env bash
#
# Quick hack to "install" pure perl modules into $PWD, very fast, by copying the .pm files from the tarball.
# Useful in Dockerfile, requires checksums of the tarball to be provided.
# 
# Usage:
#  $ cd lib && ../perl-installish-module.sh https://cpan.metacpan.org/authors/id/J/JH/JHTHORSEN/Mojo-mysql-1.17.tar.gz 93cd964760918a43124c3dc65d513372b6d1d00993427894e2f11a1f96662554
#
# Caveats:
#   - Does not run tests
#   - Only extracts *.pm files
#   - Does not resolve any dependencies
#
# Actually, it's just a simple wrapper for curl, sha256 and tar, so there are many reasons not to use this...
#
# You should probably use cpm or cpanminus instead
#

set -euo pipefail

URL=$1
SHA256=$2
FILE=`basename $URL`
INSTDIR=`pwd`

TMPDIR=`mktemp -d`
cd $TMPDIR
curl -sS --retry 10 -L -l -o $FILE $URL
echo "$SHA256 $FILE" | sha256sum -c -

tar --no-same-owner -xzf  $FILE --strip=2 -C $INSTDIR --wildcards "*.pm"
find $INSTDIR -type f -iname '*.pm' -exec chmod 444 {} \;