[Nix-dev] Seemingly inexplicable proliferation of gcc/glibc runtimes

[Kosyrev Serge]

zimbatm <zimbatm at zimbatm.com> writes:
> Is it possible some of them are kept from the bootstrap? What you need is a
> tool that constructs the dependency tree(s).

The key question is -- what this tool would use as source of
information?

Let me repeat the steps:

1. find out the glibcs:

[deepfire at andromedae:~]$ nix-analyze-rootlike glibc               # sources at [1]
; analyzing "/nix/store/*-glibc-*" (minus noise)
referrers	| disc	| correlation to profile
closure	direct  | size	| user	system
1397	1062	| 22M	| 113	25	/nix/store/dad9vxniabwzidvvxfsfj6vb0xncsbbb-glibc-2.23
210	165	| 22M	| 0	0	/nix/store/phffgv3pwihmpdyk8xsz3wv8ydysch8w-glibc-2.23
159	22	| 34M	| 0	0	/nix/store/i0l0jjkk82wsqz9z5yhg35iy78bjq684-glibc-2.21
5	5	| 22M	| 0	0	/nix/store/62n981f02b56wjqfdq00pq706k11xz4d-glibc-2.21

2. pick an easy-to-analyze anomaly:

[deepfire at andromedae:~]$ nix-store -q --referrers-closure /nix/store/62n981f02b56wjqfdq00pq706k11xz4d-glibc-2.21
/nix/store/62n981f02b56wjqfdq00pq706k11xz4d-glibc-2.21
/nix/store/5m6i1h71xp6r7k381hrsv5qwn3s6b93h-libXau-1.0.8
/nix/store/kx1l6yis70h9sly7cs4b95jq0j8yxjqr-libXdmcp-1.1.2
/nix/store/bxsi9xrrfc0qw3ndys83rppwqxbn33ma-libxcb-1.11.1
/nix/store/62bmpi8kll9kj8il89kdaddvzib3r4pm-libX11-1.6.3

What would the tool help with?  That's all the information the Nix store has.

Again, it seems a contradiction to me:

  - the referrer closure for the rogue glibc doesn't touch anything root-related
  - yet the GC doesn't collect it

So, can anyone confirm that it indeed is a bug?

-- 
с уважениeм / respectfully / Z poważaniem,
Косырев Сергей
--
1. https://github.com/deepfire/nix-store-analysis/