NixOS has gid-uid collisions in modules/misc/ids.nix

[7c6f434c]

Of the fresh ones we have:

gitolite - firebird

unifi - docker

tss - dhcpd

[edolstra]

We should change the ones that were added more recently.

[lucabrunox]

gitolite is a user while firebird is a group, though having the same id. Is that a problem?
Same goes for unifi-docker and tss-dhcpd.

[7c6f434c]

gitolite is a user while firebird is a group, though having the same id. Is that a problem?
Same goes for unifi-docker and tss-dhcpd.

Pure uid or gid collision wouldn't even happen…

There is a recommendation to avoid gid-uid collisions in the file.

[lucabrunox]

Ok then let's put an assert.

On Sat, Aug 23, 2014 at 12:43 PM, Michael Raskin notifications@github.com
wrote:

gitolite is a user while firebird is a group, though having the same id.
Is that a problem?
Same goes for unifi-docker and tss-dhcpd.

Pure uid or gid collision wouldn't even happen…

There is a recommendation to avoid gid-uid collisions in the file.

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Reply to this email directly or view it on GitHub
#3727 (comment).

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[vcunat]

We have "collisions" (same ID and different name) even on IDs 1, 2, 3, ...

What's the risk of these? If it's a problem, why don't we have a single list of IDs, used for both groups and users?

[edolstra]

It's a policy that if there are users and groups with the same name, the uid should equal the gid. Hence the big fat warning in ids.nix:

# When adding a uid, make sure it doesn't match an existing gid. And don't use uids above 399!

[domenkozar]

Is this issue resolved? Do we still need to put in the assert?

[domenkozar]

Yeah, still an issue..