Backend/feat/nammayatr-custom-osrm-backend

flake.nix

@@ -8,17 +8,22 @@
     # data files
     india-latest.url = "https://download.geofabrik.de/asia/india-latest.osm.pbf";
     india-latest.flake = false;
+
+    osrm-backend = {
+      url = "github:nammayatri/osrm-backend/Backend/feat/adding-one-to-one-distance-calculation";
+      flake = false;
+    };
   };
 
   outputs = inputs:
     inputs.flake-parts.lib.mkFlake { inherit inputs; } {
       systems = import inputs.systems;
       imports = [
-        ./osrm.nix
+        (import ./osrm.nix { osrmBackend = inputs.osrm-backend; inherit inputs; })
         ./docker.nix
       ];
       perSystem = { self', pkgs, lib, ... }: {
         formatter = pkgs.nixpkgs-fmt;
       };
     };
-}
+}

osrm.nix

@@ -1,4 +1,4 @@
-{ inputs, ... }:
+{ osrmBackend, inputs, ... }:
 
 let
   openStreetDataFileName = "india-latest";
@@ -11,31 +11,71 @@ in
     packages =
       rec {
         # Patch osrm-backend to use our own car.lua file
-        osrm-backend = pkgs.osrm-backend.overrideAttrs (oa: {
-          # TODO: Use `patches` to directly patch the car.lua file.
-          # Or, use a fork of osrm-backend, and point to it.
-          src = pkgs.runCommandNoCC "osrm-backend-patched-src" { } ''
-            cp -r ${oa.src} $out
-            chmod -R u+w $out
-            cp ${carLuaPath} $out/profiles/car.lua
-          '';
+        patched-osrm-backend = pkgs.osrm-backend.overrideAttrs (oldAttrs: {
+          src = osrmBackend;
         });
+        # pkgs.stdenv.mkDerivation {
+        #   name = "patched-osrm-backend";
+        #   src = osrmBackend;
+        #   buildInputs = [
+        #     pkgs.cmake
+        #     pkgs.boost
+        #     pkgs.tbb_2021_8 # Use TBB 2021.8 explicitly
+        #     pkgs.expat
+        #     pkgs.bzip2
+        #     pkgs.libzip
+        #     pkgs.pkg-config
+        #     pkgs.lua5_2 # Updated to Lua 5.3
+        #   ];
+
+        #   phases = [ "unpackPhase" "buildPhase" "installPhase" ];
+        #   buildPhase = ''
+        #     mkdir build
+        #     cd build
+        #     cmake .. \
+        #       -DENABLE_MASON=ON \
+        #       -DTBB_ROOT=${pkgs.tbb_2021_8} \
+        #       -DCMAKE_PREFIX_PATH="${pkgs.boost};${pkgs.tbb_2021_8};${pkgs.expat};${pkgs.bzip2};${pkgs.lua5_3}" \
+        #       -DCMAKE_CXX_STANDARD=20 \
+        #       -DCMAKE_CXX_FLAGS="-std=c++20 -stdlib=libc++" \
+        #       -DCMAKE_INSTALL_PREFIX=$out
+        #     make
+        #   '';
+        #   installPhase = ''
+        #     mkdir -p $out/bin $out/profiles
+        #     cp build/osrm-* $out/bin/
+        #     cp ${carLuaPath} $out/profiles/car.lua
+        #   '';
+        # };
+
+        osrm-data = pkgs.runCommandNoCC "osrm-data"
+          { buildInputs = [ patched-osrm-backend ]; }
+          ''
+            mkdir -p $out && cd $out
+
+            # Link input files
+            ln -s ${inputs.india-latest} ${openStreetDataFileName}.osm.pbf
+            ln -s ${speedDataPath} ${indiaSpeedDataFileName}.csv
 
-        osrm-data =
-          pkgs.runCommandNoCC "osrm-data"
-            { buildInputs = [ self'.packages.osrm-backend ]; }
-            ''
-              mkdir $out && cd $out
-              ln -s ${inputs.india-latest} ${openStreetDataFileName}.osm.pbf
-              ln -s ${speedDataPath} ${indiaSpeedDataFileName}.csv
-              osrm-extract -p ${self'.packages.osrm-backend}/share/osrm/profiles/car.lua ${openStreetDataFileName}.osm.pbf
-              osrm-partition ${openStreetDataFileName}.osrm
-              osrm-customize --segment-speed-file ${indiaSpeedDataFileName}.csv ${openStreetDataFileName}.osrm
-            '';
+            # Run OSRM tools
+            ${patched-osrm-backend}/bin/osrm-extract \
+              -p ${patched-osrm-backend}/profiles/car.lua \
+              ${openStreetDataFileName}.osm.pbf
+
+            ${patched-osrm-backend}/bin/osrm-partition \
+              ${openStreetDataFileName}.osrm
+
+            ${patched-osrm-backend}/bin/osrm-customize \
+              --segment-speed-file ${indiaSpeedDataFileName}.csv \
+              ${openStreetDataFileName}.osrm
+
+            # Move processed data to output directory
+            cp ${openStreetDataFileName}.* $out/
+          '';
 
         osrm-server = pkgs.writeShellApplication {
           name = "osrm-server";
-          runtimeInputs = [ self'.packages.osrm-backend ];
+          runtimeInputs = [ patched-osrm-backend ];
           text = ''
             set -x
             osrm-routed --algorithm mld \