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Nix Hackers

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For people hacking on the Nix package manager itself204 Servers

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11 Aug 2021
@nixinator:nixos.devnixinatorthat's what i was thinking internally... like 'it can't be a nat state problem'...it is...for my life!13:20:43
@andi:kack.itandi-Anyway that is rather off-topic for this channel (perhaps a good background information on why ratelimits are an issue).13:21:08
@nixinator:nixos.devnixinatoryeah..i agree!! but damm interesting.13:21:26
@andi:kack.itandi-Am I missing something or is the nix daemon leaking Loggers after a connection terminates / a new one is established? https://github.com/NixOS/nix/blob/c000cec27fcb16548606830410be265eb082f777/src/libstore/daemon.cc#L93917:39:01
@andi:kack.itandi-(Probably not very dangerous/important as that happens in a forked client anyway)17:40:48
@cw:kernelpanic.cafeRev. CornWallace III (novus ordo seclorum) changed their display name from cw (? days since last shower) to cw (not sticky anymore).17:56:34
@pamplemouss_:matrix.orgpamplemousse

Is there a way to use an alternative store with nix?
I am trying out --store /something --option build-use-substitutes false (option to not pull down from cache.nixos.org), but I am still having build failures.
In particular:

error: builder for '/nix/store/myfzvw3m2fzg7r3xkzr15c0flbc9mxiq-bash-4.4.tar.gz.drv' failed to produce output path for output 'out' at '/out/nix/store/rv68r40mwx7xa7vrlmanczkkjcnkc452-bash-4.4.tar.gz'

seems strange to me, why is the .drv in /nix/store?

18:07:23
@pamplemouss_:matrix.orgpamplemousse (I am trying to nix develop on https://github.com/nixos/nix (i.e. uses flakes) 18:08:12
@pamplemouss_:matrix.orgpamplemousse * (I am trying to nix develop on https://github.com/nixos/nix - i.e. uses flakes) 18:08:24
@Las:matrix.orgLas
に返俑 @pamplemouss_:matrix.org
(I am trying to nix develop on https://github.com/nixos/nix - i.e. uses flakes)
I remember seeing some recent commit about that and nix develop
19:37:08
@Las:matrix.orgLasI recommend you try using the latest commit19:37:20
@pamplemouss_:matrix.orgpamplemousseGot the same error popping πŸ˜•21:07:57
@pamplemouss_:matrix.orgpamplemousse * The same error pops πŸ˜•21:08:31
@pamplemouss_:matrix.orgpamplemousse ( Las , got a reply on #nix:nixos.org 22:28:40
@pamplemouss_:matrix.orgpamplemousse * ( Las , got a reply on #nix:nixos.org, --store cannot be used that way - this used case is likely not even solvable in nix) 22:29:11
12 Aug 2021
@fzakaria:matrix.orgfzakariaWhy has Nix chosen so much base32 ?21:17:37
@nixinator:nixos.devnixinator
In reply to @fzakaria:matrix.org
Why has Nix chosen so much base32 ?
it's that way, because of the limit of posix filepaths... and there's some char's missing, so you can't get stuff like f**ksadirjijeifjifiejwjwfj type hashes! ;-)
21:20:39
@nixinator:nixos.devnixinatorbelieve it or not.21:20:46
@fzakaria:matrix.orgfzakariaah21:21:17
@fzakaria:matrix.orgfzakariaI wish sha256sum had a base32 option22:00:52
@andi:kack.itandi-It is not the base32 you might be thinking of. Nix has a custom alphabet.22:08:11
13 Aug 2021
@qyliss:fairydust.spaceAlyssa Ross fzakaria: do you know about nix-hash(1)? 06:49:11
@qyliss:fairydust.spaceAlyssa Ross has anybody encountered an issue where Nix creates empty .drv files for some expressions, and then fails with e.g. error: error parsing derivation '/nix/store/mgbw0dg9ihd3cg8wksdm0d2vi207pnfa-ruby2.7.4-docurium-0.6.0.drv': expected string 'Derive(['? 06:50:39
@Las:matrix.orgLas
In reply to @qyliss:fairydust.space
has anybody encountered an issue where Nix creates empty .drv files for some expressions, and then fails with e.g. error: error parsing derivation '/nix/store/mgbw0dg9ihd3cg8wksdm0d2vi207pnfa-ruby2.7.4-docurium-0.6.0.drv': expected string 'Derive(['?
Yes, your store is corrupted
07:49:28
@qyliss:fairydust.spaceAlyssa Rosscorrupted how?07:49:58
@Las:matrix.orgLasIt happens when my system crashes07:49:59
@Las:matrix.orgLasAnd I'm in the process of building07:50:04
@qyliss:fairydust.spaceAlyssa Ross of building, not instantiating? 07:50:36
@Las:matrix.orgLasWell yeah, technically when I'm instantiating07:50:50
@qyliss:fairydust.spaceAlyssa Rossit's strange because it's reproducible07:51:20

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