Add devenv-based dev environment and README
Adds devenv.nix (with alsa-lib and pkg-config for rodio/cpal builds), rust-toolchain.toml pinning stable, and updated .gitignore. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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target
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/target
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# devenv
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.devenv*
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devenv.local.nix
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devenv.local.yaml
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# direnv
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.direnv
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# pre-commit / git-hooks
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.pre-commit-config.yaml
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.vim
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AGENTS.md
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CLAUDE.md
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.mcp.json
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.codex/
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opencode.json
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.claude/
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.agents/
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.opencode/
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.explained/
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*.kickstart-new
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{ pkgs, lib, ... }:
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{
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packages = with pkgs; [
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bacon
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cargo-deny
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cargo-duplicates
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cargo-expand
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cargo-features-manager
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cargo-flamegraph
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cargo-geiger
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cargo-generate
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cargo-hack
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cargo-insta
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cargo-llvm-cov
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cargo-machete
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cargo-mutants
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cargo-nextest
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cargo-rr
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cargo-udeps
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cargo-vet
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cargo-workspaces
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git
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sccache
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tokio-console
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vulkan-tools
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];
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env.RUSTC_WRAPPER = "sccache";
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# https://devenv.sh/languages/
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languages.rust = {
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enable = true;
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channel = "stable";
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clangLinker.enable = true;
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mold.enable = true;
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rustflags = lib.concatStringsSep " " [
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];
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components = [
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"rustc"
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"cargo"
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"clippy"
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"rustfmt"
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"rust-analyzer"
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];
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};
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tasks."devenv:git-hooks:prepare-shared-hooks-rust" = {
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exec = ''
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if hooks_dir="$(git rev-parse --git-path hooks 2>/dev/null)"; then
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mkdir -p "$hooks_dir"
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chmod u+rwx,g+rwx "$hooks_dir" 2>/dev/null || true
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find "$hooks_dir" -maxdepth 1 -type f ! -user "$(id -un)" ! -name '*.sample' -delete 2>/dev/null || true
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fi
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'';
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after = [ "devenv:files" ];
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before = [ "devenv:git-hooks:install" ];
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};
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git-hooks.hooks = {
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rustfmt.enable = true;
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clippy.enable = true;
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};
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}
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{
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"nodes": {
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"devenv": {
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"locked": {
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"dir": "src/modules",
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"lastModified": 1784325378,
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"narHash": "sha256-Gof6j4d43yX2qSLLp78JILke346IggDFIxTgl3ecVQE=",
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"owner": "cachix",
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"repo": "devenv",
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"rev": "5f1cf17be0fc48689bd0ecb810de6d2e06d259a1",
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"type": "github"
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},
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"original": {
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"dir": "src/modules",
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"owner": "cachix",
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"repo": "devenv",
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"type": "github"
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}
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},
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"flake-compat": {
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"flake": false,
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"locked": {
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"lastModified": 1767039857,
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"narHash": "sha256-vNpUSpF5Nuw8xvDLj2KCwwksIbjua2LZCqhV1LNRDns=",
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"owner": "NixOS",
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"repo": "flake-compat",
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"rev": "5edf11c44bc78a0d334f6334cdaf7d60d732daab",
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"type": "github"
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},
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"original": {
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"owner": "NixOS",
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"repo": "flake-compat",
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"type": "github"
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}
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},
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"git-hooks": {
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"inputs": {
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"flake-compat": "flake-compat",
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"nixpkgs": [
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"nixpkgs"
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]
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},
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"locked": {
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"lastModified": 1784288435,
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"narHash": "sha256-ReRHaLgr/uVqdD8afFSn+myXIfpHeOhP0yYe0TJqAA8=",
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"owner": "cachix",
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"repo": "git-hooks.nix",
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"rev": "43b3c1ab9d40fb1dbb008f451988a91e375825e9",
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"type": "github"
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},
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"original": {
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"owner": "cachix",
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"repo": "git-hooks.nix",
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"type": "github"
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}
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},
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"nixpkgs": {
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"inputs": {
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"nixpkgs-src": "nixpkgs-src"
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},
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"locked": {
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"lastModified": 1783345554,
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"narHash": "sha256-LZhOm4kqjHUnwP4CNHpaqqEVcumGNd1PvOEOad8LkS0=",
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"owner": "cachix",
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"repo": "devenv-nixpkgs",
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"rev": "6004ea8c229fe9d41b21c6f4c76bf6c2e10771dd",
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"type": "github"
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},
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"original": {
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"owner": "cachix",
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"ref": "rolling",
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"repo": "devenv-nixpkgs",
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"type": "github"
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}
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},
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"nixpkgs-src": {
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"flake": false,
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"locked": {
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"lastModified": 1783279667,
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"narHash": "sha256-/NAkDSsve+GNM0Bt6tleJdCGfsTlK89nPjkVOzZMo0s=",
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"owner": "NixOS",
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"repo": "nixpkgs",
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"rev": "f205b5574fd0cb7da5b702a2da51507b7f4fdd1b",
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"type": "github"
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},
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"original": {
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"owner": "NixOS",
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"ref": "nixpkgs-unstable",
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"repo": "nixpkgs",
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"type": "github"
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}
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},
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"nixpkgs-unstable": {
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"locked": {
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"lastModified": 1784453100,
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"narHash": "sha256-zpGZb8FYui+i8KLtC0nlcmb0voR2zB80Qn8pe7lzIbk=",
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"owner": "nixos",
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"repo": "nixpkgs",
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"rev": "b471514bed69eff5255c8e63c1f80e5fe56c616f",
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"type": "github"
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},
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"original": {
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"owner": "nixos",
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"ref": "nixpkgs-unstable",
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"repo": "nixpkgs",
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"type": "github"
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}
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},
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"root": {
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"inputs": {
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"devenv": "devenv",
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"git-hooks": "git-hooks",
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"nixpkgs": "nixpkgs",
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"nixpkgs-unstable": "nixpkgs-unstable",
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"rust-overlay": "rust-overlay"
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}
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},
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"rust-overlay": {
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"inputs": {
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"nixpkgs": [
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"nixpkgs"
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]
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},
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"locked": {
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"lastModified": 1784438913,
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"narHash": "sha256-NYF7ZM5ip0u+w1pBFDpIGEbrbgN/wpnLFAmBkWkYMXw=",
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"owner": "oxalica",
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"repo": "rust-overlay",
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"rev": "afacd6819d3765a05814ee8e3de74c77d42ac799",
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"type": "github"
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},
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"original": {
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"owner": "oxalica",
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"repo": "rust-overlay",
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"type": "github"
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}
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}
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},
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"root": "root",
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"version": 7
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}
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{
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pkgs,
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lib,
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config,
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inputs,
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...
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}:
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let
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pkgs-unstable = import inputs.nixpkgs-unstable { system = pkgs.stdenv.system; };
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commonLibs = with pkgs; [ alsa-lib ];
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extraPackages = with pkgs; [
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pkg-config
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];
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in
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{
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imports = [ ./devenv-rust.nix ];
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env = {
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LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath commonLibs;
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};
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# https://devenv.sh/packages/
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packages = commonLibs ++ extraPackages;
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# https://devenv.sh/processes/
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# processes.cargo-watch.exec = "cargo-watch";
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# https://devenv.sh/services/
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# services.postgres.enable = true;
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# https://devenv.sh/scripts/
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scripts.hello.exec = ''
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echo Welcome to rust devenv
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'';
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enterShell = "";
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# https://devenv.sh/tasks/
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# tasks = {
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# "myproj:setup".exec = "mytool build";
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# "devenv:enterShell".after = [ "myproj:setup" ];
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# };
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# https://devenv.sh/tests/
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enterTest = ''
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echo "Running tests"
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'';
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# https://devenv.sh/git-hooks/
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git-hooks.hooks = {
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nixfmt.enable = true;
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taplo.enable = true;
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markdownlint.enable = true;
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shellcheck.enable = true;
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};
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# https://devenv.sh/integrations/claude-code/
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# Claude Code integration: writes .claude/{settings,commands,agents}. We keep
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# ownership of .mcp.json (skills wiring), so stop devenv from writing it.
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claude.code.enable = true;
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claude.code.mcpServers = lib.mkForce { };
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claude.code.hooks.git-hooks-run.command = ''
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f=$(${pkgs.jq}/bin/jq -r '.tool_input.file_path // empty')
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if [ -n "$f" ]; then
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cd "''${CLAUDE_PROJECT_DIR:-.}"
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${lib.getExe config.git-hooks.package} run --files "$f"
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fi
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'';
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# See full reference at https://devenv.sh/reference/options/
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}
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# yaml-language-server: $schema=https://devenv.sh/devenv.schema.json
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inputs:
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nixpkgs:
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url: github:cachix/devenv-nixpkgs/rolling
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nixpkgs-unstable:
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url: github:nixos/nixpkgs/nixpkgs-unstable
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rust-overlay:
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url: github:oxalica/rust-overlay
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inputs:
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nixpkgs:
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follows: nixpkgs
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git-hooks:
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url: github:cachix/git-hooks.nix
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inputs:
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nixpkgs:
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follows: nixpkgs
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[toolchain]
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channel = "stable"
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