initial

.envrc

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+use flake

.gitignore

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+.direnv
+watch-data
+.ipynb_checkpoints

flake.lock

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+{
+  "nodes": {
+    "fenix": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "rust-analyzer-src": "rust-analyzer-src"
+      },
+      "locked": {
+        "lastModified": 1679120542,
+        "narHash": "sha256-NqulL85Yk/5fF7Tw3CIN8E6Xf6c6u36r1yXo4rbjS74=",
+        "owner": "nix-community",
+        "repo": "fenix",
+        "rev": "e9afa9455d7a6505d7d13fe8e038e430bbf149d0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "fenix",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1678901627,
+        "narHash": "sha256-U02riOqrKKzwjsxc/400XnElV+UtPUQWpANPlyazjH0=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "93a2b84fc4b70d9e089d029deacc3583435c2ed6",
+        "type": "github"
+      },
+      "original": {
+        "id": "flake-utils",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1678898370,
+        "narHash": "sha256-xTICr1j+uat5hk9FyuPOFGxpWHdJRibwZC+ATi0RbtE=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "ac718d02867a84b42522a0ece52d841188208f2c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1679179812,
+        "narHash": "sha256-TJsTvvHw2ksS5WBdtnHr768ByKO0pe6B3mxYtDpsZmY=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "f967d005f762bc209ba6d2c36d985d71edb136a5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "fenix": "fenix",
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs_2"
+      }
+    },
+    "rust-analyzer-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1678888936,
+        "narHash": "sha256-xs5tbRf0k1RA9li0rM7k1ar0sG5DHp9+rpAP7sjhsNw=",
+        "owner": "rust-lang",
+        "repo": "rust-analyzer",
+        "rev": "924d277f32b53219fcaa03226c17b485a081ed16",
+        "type": "github"
+      },
+      "original": {
+        "owner": "rust-lang",
+        "ref": "nightly",
+        "repo": "rust-analyzer",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

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+{
+  inputs = {
+    fenix.url = "github:nix-community/fenix";
+    nixpkgs.url = "github:nixos/nixpkgs";
+  };
+
+  outputs = { self, nixpkgs, flake-utils, fenix }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs {
+          inherit system;
+          overlays = [ fenix.overlays.default ];
+        };
+
+        toolchain = pkgs.fenix.stable;
+      in rec {
+        devShell = pkgs.mkShell {
+          packages = (with pkgs; [
+            cargo-deny
+            cargo-edit
+            cargo-expand
+            cargo-flamegraph
+            cargo-watch
+
+            (python310.withPackages
+              (p: with p; [ jupyterlab pandas seaborn numpy scipy sympy ]))
+          ]) ++ (with toolchain; [
+            cargo
+            rustc
+            clippy
+
+            # Get the nightly version of rustfmt so we can wrap comments
+            pkgs.fenix.default.rustfmt
+          ]);
+
+          CARGO_UNSTABLE_SPARSE_REGISTRY = "true";
+        };
+      });
+}