| 19 Sep 2023 |
 mr-qubo | * Why builtins.getFlake "nixpkgs" requires --impure, but e.g. nix shell 'nixpkgs#hello' works without --impure? Seems like I'm missing some understanding. | 18:00:36 |
 CRTified | In reply to @mr-qubo:matrix.org
Why builtins.getFlake "nixpkgs" requires --impure, but e.g. nix shell 'nixpkgs#hello' works without --impure? Seems like I'm missing some understanding. The first one is probably evaluated in a different flake and thus "breaks" the expectation of being pure, while the second one is impure on its own as you rarely have a pure shell env (and the concrete result of nixpkgs depends on your local flake registry) | 22:32:40 |
| 20 Sep 2023 |
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| 21 Sep 2023 |
|  spolakh joined the room. | 03:25:36 |
 @ronnypfannschmidt:matrix.org | In reply to @crtified:crtified.me
The first one is probably evaluated in a different flake and thus "breaks" the expectation of being pure, while the second one is impure on its own as you rarely have a pure shell env (and the concrete result of nixpkgs depends on your local flake registry) as per https://nixos.org/manual/nix/stable/language/builtins.html#builtins-getFlake - unless impure is allowed the flake needs to be locked
nix shell with a flake auto-updates a lock if necessary | 10:52:13 |
| @ronnypfannschmidt:matrix.org | however nix-shell will also put the flake into the nix store before evaluating | 10:52:55 |
|  bembo set a profile picture. | 16:01:57 |
| 26 Sep 2023 |
 @penguincoder:matrix.wolfie.pw | I'm trying to use flake inputs as a way to track several other non-flake git repos. The idea is that after CI passes on the other repos, I will update the lock for that particular input. I then want to use my flake to build packages for these other, non-flake, inputs. I can add the input pretty easily, and flake-parts provides me with inputs' as an attribute to my modules. This much works great, but when I go to pass the input in mkPoetryApp { projectDir = inputs'.my-python-app; }, it fails with cannot coerce a set into a string.
which is okay, I guess, it's an attrset. That makes sense... but none of the attrs that I know exist in the input schema seem to work. I can't get lib.debug.traceVal to ever print anything out, either. What can I give mkPoetryApp to figure out where the path-in-the-store-on-my-disk is for projectDir or is there a better way to manage the non-flake inputs? What I don't want to do is have to manually change the rev using fetchGit each time CI changes.
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| 21 Sep 2023 |
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| 22 Sep 2023 |
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| 23 Sep 2023 |
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| 24 Sep 2023 |
 @aidalgol:matrix.org | If I have a function call several times with the same argument values, does it have to compute it for every call, or just once? | 08:51:35 |
| @aidalgol:matrix.org | * If I have a function call several times in a flake.nix with the same argument values, does it have to compute it for every call, or just once? | 08:51:50 |
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| 25 Sep 2023 |
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| 26 Sep 2023 |
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| 27 Sep 2023 |
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| amnicolist | Hi flakes, I'm new to nixos/flakes and this chat. I have a question about flake-parts and overlays. I hope its okay to ask here.
I'm trying to get the [rust-overlay](https://github.com/oxalica/rust-overlay
| 02:17:58 |
| amnicolist | * Hi flakes, I'm new to nixos/flakes and this chat. I have a question about flake-parts and overlays. I hope its okay to ask here.
I'm trying to get the [rust-overlay](https://github.com/oxalica/rust-overlay) working with an existing repo that I forked. However, I can't figure out how to get access to the rust-bin set once I follow the https://flake.parts/overlays documentation
| 02:19:19 |
| amnicolist | * Hi flakes, I'm new to nixos/flakes and this chat. I have a question about flake-parts and overlays. I hope its okay to ask here.
I'm trying to get the rust-overlay working with an existing repo that I forked. However, I can't figure out how to get access to the rust-bin set once I follow the https://flake.parts/overlays documentation
| 02:19:32 |
 Charles | Would you be amenable to an alternative that doesn't involve overlays | 02:43:36 |
