Index: setup.py
--- setup.py.orig
+++ setup.py
@@ -12,7 +12,7 @@ from setuptools import setup
 
 share = Path(sys.prefix, 'share')
 base = '/usr'
-if os.uname().sysname == 'Darwin':
+if os.uname().sysname == 'Darwin' or os.uname().sysname == 'OpenBSD':
     base = '/usr/local'
 lib = Path(base, 'lib', 'password-store', 'extensions')
 
@@ -28,7 +28,7 @@ if '--user' in sys.argv:
 
 setup(
     data_files=[
-        (str(share / 'man' / 'man1'), [
+        (str(Path(sys.prefix) / 'man' / 'man1'), [
             'share/man/man1/pass-import.1',
             'share/man/man1/pimport.1',
         ]),