`charmcraft build` errors when pip packages located in github are included in the requirements.txt. This issue can be reproduced if you build a charm where the requirements.txt contains pip packages that live in github. Reproducer: ``` git clone https://github.com/ducks23/charm-slurmdbd -b bdx_charmcraft cd charm-slurmdbd charmcraft build ``` Here is our example of the breakage below: ``` $ cat requirements.txt ops #git+https://github.com/omnivector-solutions/interface-mysql.git@master #git+https://github.com/omnivector-solutions/slurm-snap-manager.git@master $ charmcraft build Done, charm left in 'slurmdbd.charm' $ vim requirements.txt $ cat requirements.txt ops git+https://github.com/omnivector-solutions/interface-mysql.git@master git+https://github.com/omnivector-solutions/slurm-snap-manager.git@master $ charmcraft build Executing ['pip3', 'install', '--target=/home/bdx/allcode/github/ducks23/charm-slurmdbd/build/venv', '--requirement=/home/bdx/allcode/github/ducks23/charm-slurmdbd/requirements.txt'] failed with return code 1 problems installing dependencies ``` I can install the requirements.txt by hand successfully ``` $ pip install -r requirements.txt Collecting git+https://github.com/omnivector-solutions/interface-mysql.git@master (from -r requirements.txt (line 2)) Cloning https://github.com/omnivector-solutions/interface-mysql.git (to revision master) to /tmp/pip-req-build-ztlxwhvf Running command git clone -q https://github.com/omnivector-solutions/interface-mysql.git /tmp/pip-req-build-ztlxwhvf Collecting git+https://github.com/omnivector-solutions/slurm-snap-manager.git@master (from -r requirements.txt (line 3)) Cloning https://github.com/omnivector-solutions/slurm-snap-manager.git (to revision master) to /tmp/pip-req-build-pwosnebt Running command git clone -q https://github.com/omnivector-solutions/slurm-snap-manager.git /tmp/pip-req-build-pwosnebt Requirement already satisfied: ops in /home/bdx/allcode/github/venv/lib/python3.8/site-packages (from -r requirements.txt (line 1)) (0.6.1) Requirement already satisfied: PyYAML in /home/bdx/allcode/github/venv/lib/python3.8/site-packages (from ops->-r requirements.txt (line 1)) (5.3.1) Building wheels for collected packages: interface-mysql, slurm-snap-manager Building wheel for interface-mysql (setup.py) ... error ERROR: Command errored out with exit status 1: command: /home/bdx/allcode/github/venv/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-req-build-ztlxwhvf/setup.py'"'"'; __file__='"'"'/tmp/pip-req-build-ztlxwhvf/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /tmp/pip-wheel-y8jlp8ro cwd: /tmp/pip-req-build-ztlxwhvf/ Complete output (6 lines): usage: setup.py [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...] or: setup.py --help [cmd1 cmd2 ...] or: setup.py --help-commands or: setup.py cmd --help error: invalid command 'bdist_wheel' ---------------------------------------- ERROR: Failed building wheel for interface-mysql Running setup.py clean for interface-mysql Building wheel for slurm-snap-manager (setup.py) ... error ERROR: Command errored out with exit status 1: command: /home/bdx/allcode/github/venv/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-req-build-pwosnebt/setup.py'"'"'; __file__='"'"'/tmp/pip-req-build-pwosnebt/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /tmp/pip-wheel-gd2m4kjg cwd: /tmp/pip-req-build-pwosnebt/ Complete output (6 lines): usage: setup.py [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...] or: setup.py --help [cmd1 cmd2 ...] or: setup.py --help-commands or: setup.py cmd --help error: invalid command 'bdist_wheel' ---------------------------------------- ERROR: Failed building wheel for slurm-snap-manager Running setup.py clean for slurm-snap-manager Failed to build interface-mysql slurm-snap-manager Installing collected packages: interface-mysql, slurm-snap-manager Running setup.py install for interface-mysql ... done Running setup.py install for slurm-snap-manager ... done Successfully installed interface-mysql-0.0.1 slurm-snap-manager-0.0.1 ``` Running `snappy-debug` shows: ``` = AppArmor = Time: Jun 24 10:26:01 Log: apparmor="DENIED" operation="open" profile="snap.charmcraft.charmcraft" name="/etc/" pid=3626019 comm="python3" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 File: /etc/ (read) Suggestions: * adjust program to read necessary files from $SNAP, $SNAP_DATA, $SNAP_COMMON, $SNAP_USER_DATA or $SNAP_USER_COMMON * adjust snap to use snap layouts (https://forum.snapcraft.io/t/snap-layouts/7207) = AppArmor = Time: Jun 24 10:28:39 ```