optools/arch/reference

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some random snippets to incorporate...
######################
this was to assist with https://www.archlinux.org/news/perl-library-path-change/
the following was used to gen the /tmp/perlfix.pkgs.lst:
pacman -Qqo '/usr/lib/perl5/vendor_perl' >> /tmp/perlfix.pkgs.lst ; pacman -Qqo '/usr/lib/perl5/site_perl' >> /tmp/perlfix.pkgs.lst
######################
#!/usr/bin/env python3
import datetime
import re
import os
import pprint
import subprocess
pkgs = []
pkglstfile = '/tmp/perlfix.pkgs.lst'
if os.path.isfile(pkglstfile):
with open(pkglstfile, 'r') as f:
pkgs = f.read().splitlines()
pkgd = {'rdeps': [],
'deps': [],
'remove': []}
for p in pkgs:
pkgchkcmd = ['apacman', '-Q', p]
with open(os.devnull, 'w') as devnull:
pkgchk = subprocess.run(pkgchkcmd, stdout = devnull, stderr = devnull).returncode
if pkgchk != 0: # not installed anymore
break
cmd = ['apacman',
'-Qi',
p]
stdout = subprocess.run(cmd, stdout = subprocess.PIPE).stdout.decode('utf-8').strip().splitlines()
#pprint.pprint(stdout)
d = {re.sub('\s', '_', k.strip().lower()):v.strip() for k, v in (dict(k.split(':', 1) for k in stdout).items())}
# some pythonizations..
# list of things(keys) that should be lists
ll = ['architecture', 'conflicts_with', 'depends_on', 'groups', 'licenses', 'make_depends',
'optional_deps', 'provides', 'replaces', 'required_by']
# and now actually listify
for k in ll:
if k in d.keys():
if d[k].lower() in ('none', ''):
d[k] = None
else:
d[k] = d[k].split()
# Not necessary... blah blah inconsistent whitespace blah blah.
#for k in ('build_date', 'install_date'):
# if k in d.keys():
# try:
# d[k] = datetime.datetime.strptime(d[k], '%a %d %b %Y %H:%M:%S %p %Z')
# except:
# d[k] = datetime.datetime.strptime(d[k], '%a %d %b %Y %H:%M:%S %p')
#pprint.pprint(d)
if d['required_by']:
pkgd['rdeps'].extend(d['required_by'])
else:
if d['install_reason'] != 'Explicitly installed':
pkgd['remove'].append(p)
if d['depends_on']:
pkgd['deps'].extend(d['depends_on'])
#break
for x in ('rdeps', 'deps'):
pkgd[x].sort()
#for p in pkgd['rdeps']:
# if p in pkgd['deps']:
# pkgd['
#print('DEPENDENCIES:')
#print('\n'.join(pkgd['deps']))
#print('\nREQUIRED BY:')
#print('\n'.join(pkgd['rdeps']))
#print('\nCAN REMOVE:')
print('\n'.join(pkgd['remove']))
#cmd = ['apacman', '-R']
#cmd.extend(pkgd['remove'])
#subprocess.run(cmd)