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Fix Pacman "error: duplicated database entry '<package>'" for Arch Linux
#!/usr/bin/env python
import os,re, datetime
d = '/var/lib/pacman/local'
packages = os.listdir(d)
packages.sort()
packages.remove('ALPM_DB_VERSION')
pkgname_search = re.compile('^(.*?)-[0-9]')
old_packages = []
for pkg1 in packages:
if pkg1 in old_packages:
continue
#get package name
matches = pkgname_search.findall(pkg1)
print(pkg1)
if matches == []:
continue
pkgname = matches[0]
#look for other items with the same package name
for pkg2 in packages:
if pkg2 == pkg1:
continue
if pkg2 in old_packages:
continue
if pkgname == pkgname_search.findall(pkg2)[0]:
# We now have two duplicate packages, we want to delete the old one
old_package = pkg1
path1 = os.path.join(d,pkg1)
path2 = os.path.join(d,pkg2)
if os.stat(path1).st_mtime > os.stat(path2).st_mtime:
old_package = pkg2
old_packages.append(old_package)
#print ('duplicate found:\t')
#print (pkg1)
#print (pkg2)
#print ('old:', old_package)
oldpath = os.path.join(d,old_package)
target = os.path.join('/var/lib/pacman/OLD',old_package)
cmd = 'mv "%s" "%s"' % (oldpath, target)
#double-check that the oldpath still exists (it may have been removed in a previous pass)
if os.path.exists(oldpath):
print(cmd)
os.system(cmd)
@ZimbiX
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ZimbiX commented Apr 13, 2017

Original script from @jeffmikels: https://bbs.archlinux.org/viewtopic.php?pid=1034553#p1034553.

I added line 8 to account for an extra file in that directory on my system, ALPM_DB_VERSION.

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