Merge pull request #246 from Tom94/flake-deploy

feat: allow deploying tev via nix flake

flake.nix

@@ -1,5 +1,5 @@
 {
-  description = "Nix tev dev env";
+  description = "tev — The EXR Viewer";
 
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
@@ -10,32 +10,77 @@
     flake-utils.lib.eachDefaultSystem (system:
       let
         pkgs = nixpkgs.legacyPackages.${system};
-      in
-      {
-        devShell = pkgs.mkShell {
-          buildInputs = with pkgs; [
-            gcc
-            gdb
-            cmake
-            pkg-config
-            binutils
-            zlib
 
-            xorg.libX11.dev
-            xorg.libXi.dev
-            xorg.libXrandr.dev
-            xorg.libXinerama.dev
-            xorg.libXcursor.dev
-            xorg.libXext.dev
-            xorg.libXfixes.dev
-            xorg.libXrender.dev
+        # Extract version from CMakeLists.txt
+        version = with builtins;
+          let
+            cmakeContents = readFile ./CMakeLists.txt;
+            versionMatch = match ".*VERSION[[:space:]]+([^[:space:]]+).*" cmakeContents;
+          in
+          if versionMatch == null then throw "Could not find version in CMakeLists.txt"
+          else head versionMatch;
 
+        # Common dependencies shared between dev shell and build
+        commonDeps = with pkgs;
+          if stdenv.isDarwin then [
+            darwin.apple_sdk.frameworks.Cocoa
+            darwin.apple_sdk.frameworks.OpenGL
+          ] else [
+            xorg.libX11
+            xorg.libXcursor
+            xorg.libXinerama
+            xorg.libXrandr
+            xorg.libXi
             libGL
+            zlib
           ];
 
-          shellHook = ''
-            export CMAKE_PREFIX_PATH="${pkgs.xorg.libX11.dev}:${pkgs.xorg.libXi.dev}:${pkgs.libGL}:''${CMAKE_PREFIX_PATH:-}"
-          '';
+        # Common build inputs shared between dev shell and build
+        commonBuildInputs = with pkgs; [
+          cmake
+        ];
+
+        tev = pkgs.stdenv.mkDerivation {
+          pname = "tev";
+          inherit version;
+
+          src = ./.;
+
+          nativeBuildInputs = commonBuildInputs;
+          buildInputs = commonDeps;
+
+          cmakeFlags = [
+            "-DCMAKE_BUILD_TYPE=Release"
+            "-DTEV_DEPLOY=ON"
+          ];
+
+          meta = with pkgs.lib; {
+            description = "High dynamic range (HDR) image comparison tool for graphics people";
+            homepage = "https://github.com/Tom94/tev";
+            license = licenses.bsd3;
+            platforms = platforms.unix;
+            maintainers = [ ];
+          };
+        };
+      in
+      {
+        packages = {
+          default = tev;
+          tev = tev;
+        };
+
+        devShell = pkgs.mkShell {
+          buildInputs = commonDeps ++ commonBuildInputs ++ (with pkgs;
+            if stdenv.isDarwin then [ ] else [
+              gcc
+              gdb
+              binutils
+            ]
+          );
+        };
+
+        apps.default = flake-utils.lib.mkApp {
+          drv = tev;
         };
       }
     );