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chore: add flake.nix#113

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1fc16ab
chore: added `flake.nix`
ggreif May 15, 2025
e44730a
simplify
ggreif May 15, 2025
680f450
there is no `rust-toolchain.toml` a.t.m., so leave this out for now
ggreif May 16, 2025
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62 changes: 62 additions & 0 deletions flake.lock
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41 changes: 41 additions & 0 deletions flake.nix
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@@ -0,0 +1,41 @@
{
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
rust-overlay.url = "github:oxalica/rust-overlay";
};

outputs = {
self,
nixpkgs,
rust-overlay,
}: let
system = "aarch64-darwin";

@basvandijkbasvandijkMay 15, 2025

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You could also consider using flake-utils like we do in motoko to support all common systems.

@ggreifggreifMay 15, 2025

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Yeah, gonna cross-study. I am at present just copying the ggreif/sdk flake recipe!

@ggreifggreifMay 15, 2025

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I couldn't get nix develop working yet! Any idea what I am getting wrong?

@basvandijkbasvandijkMay 15, 2025

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You correctly added a devShells.${system}.default so that''s good. What error are you getting?

@basvandijkbasvandijkMay 15, 2025

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It also seems you're using pkgs.mkShell correctly.

@ggreifggreifMay 15, 2025

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$ nix develop
error:
… while calling the 'derivationStrict' builtin
at <nix/derivation-internal.nix>:37:12:
36|
37| strict = derivationStrict drvAttrs;
| ^
38|
… while evaluating derivation 'nix-shell'
whose name attribute is located at /nix/store/x9wnkly3k1gkq580m90jjn32q9f05q2v-source/pkgs/stdenv/generic/make-derivation.nix:439:13
… while evaluating attribute '__impureHostDeps' of derivation 'nix-shell'
at /nix/store/x9wnkly3k1gkq580m90jjn32q9f05q2v-source/pkgs/stdenv/generic/make-derivation.nix:579:15:
578| );
579| __impureHostDeps =
| ^
580| computedImpureHostDeps
(stack trace truncated; use '--show-trace' to show the full, detailed trace)
error: opening file '/nix/store/jwjajnviyim6mzpsbdwin496gv88x04b-source/rust-toolchain.toml': No such file or directory

@ggreifggreifMay 15, 2025

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I guess this dev-dependency needs to be declared?

@basvandijkbasvandijkMay 15, 2025

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It means you didn't add rust-toolchain.toml to git.

@ggreifggreifMay 16, 2025

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Yeah, there is no such file. Maybe later. Kind-of negates devShell, but no biggie.

pkgs = import nixpkgs {
inherit system;
overlays = [rust-overlay.overlays.default];
};
#toolchain = pkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml;
manifest = (pkgs.lib.importTOML ./Cargo.toml).package;
in {
devShells.${system}.default = pkgs.mkShell {
packages = [
#toolchain
];

nativeBuildInputs = [
#pkgs.clang_19
#pkgs.cmake
];

CXXFLAGS_aarch64_apple_darwin = "--target=aarch64-apple-darwin";

};

packages.${system}.default = pkgs.rustPlatform.buildRustPackage rec {
pname = manifest.name;
inherit (manifest) version;
cargoLock.lockFile = ./Cargo.lock;
src = pkgs.lib.cleanSource ./.;
};
};
}