Set up nix flake

.gitignore

@@ -1 +1,2 @@
 /target
+/result

flake.lock

@@ -0,0 +1,42 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1649676176,
+        "narHash": "sha256-OWKJratjt2RW151VUlJPRALb7OU2S5s+f0vLj4o1bHM=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "a4b154ebbdc88c8498a5c7b01589addc9e9cb678",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1649619156,
+        "narHash": "sha256-p0q4zpuKMwrzGF+5ZU7Thnpac5TinhDI9jr2mBxhV4w=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "e7d63bd0d50df412f5a1d8acfa3caae75522e347",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-21.11",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,70 @@
+{
+  description = "Collection of DSLs which can solve discrete mathematics problems";
+
+  inputs = {
+    nixpkgs.url = "nixpkgs/nixos-21.11";
+
+    flake-utils = {
+      url = "github:numtide/flake-utils";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+  outputs = { self, flake-utils, nixpkgs }:
+  flake-utils.lib.eachSystem [
+    "aarch64-linux"
+    "aarch64-darwin"
+    "i686-linux"
+    "x86_64-darwin"
+    "x86_64-linux"
+  ]
+  (system: let
+    pkgs = import nixpkgs { inherit system; }; 
+    cargoTOML = pkgs.lib.importTOML ./Cargo.toml;
+    version = cargoToml.package.version;
+  in rec {
+
+    defaultApp = apps.diskmat-tools;
+
+    apps.diskmat-tools = {
+      type = "app";
+      program = "${packages.diskmat-tools}/bin/diskmat_tools";
+    };
+
+    defaultPackage = packages.diskmat-tools;
+
+    packages = {
+
+      diskmat-tools = pkgs.rustPlatform.buildRustPackage {
+        pname = "diskmat-tools";
+        inherit version;
+        src = ./.;
+    
+        buildInputs = [ pkgs.graphviz ];
+        cargoLock.lockFile = ./Cargo.lock;
+      };
+
+      diskmat-tools-examples = pkgs.stdenv.mkDerivation {
+        pname = "diskmat-tools-examples";
+        inherit version;
+        src = ./example_files;
+        nativeBuildInputs = [ packages.diskmat-tools ];
+
+        # TODO: `rm -r matrix` should be removed after support is implemented
+        buildPhase = ''
+          rm -r matrix
+          for file in $(find -type f)
+          do
+            diskmat_tools -i $file -o "''${file%.*}.png"
+          done
+        '';
+
+        installPhase = ''
+          mkdir $out
+          cp -r . $out
+        '';
+
+      };
+
+    };
+  });
+}

src/main.rs

@@ -78,9 +78,9 @@ fn main() -> std::io::Result<()> {
         match args.t.as_deref() {
             Some("ba") => BAParser::parse(&mut input),
             Some("tt") => TTParser::parse(&mut input),
+            Some("mx") => panic!("Not implemented yet"),
             _ => panic!("Doesn't recognize file"),
         }
-        // parse(&mut input)
     } else if args.input.is_some() {
         // } else {
         let t = args.input.unwrap();
@@ -89,6 +89,7 @@ fn main() -> std::io::Result<()> {
         match t.split('.').last() {
             Some("ba") => BAParser::parse(&mut input),
             Some("tt") => TTParser::parse(&mut input),
+            Some("mx") => panic!("Not implemented yet"),
             _ => panic!("Doesn't recognize file"),
         }
     } else {