nix: add libwaku target, fix compiling Nim using NBS

Use Nim built by NBS otherwise it doesn't work for both libwaku and
wakucanary.

Referenced issue:
* https://github.com/status-im/status-go/issues/7152

flake.nix

@@ -1,5 +1,5 @@
 {
-  description = "NWaku build flake";
+  description = "Logos Messaging Nim build flake";
 
   nixConfig = {
     extra-substituters = [ "https://nix-cache.status.im/" ];
@@ -54,10 +54,21 @@
           zerokitRln = zerokit.packages.${system}.rln-android-arm64;
         };
 
+        libwaku= pkgs.callPackage ./nix/default.nix {
+          inherit stableSystems;
+          src = self;
+          targets = ["libwaku"];
+          # We are not able to compile the code with nim-unwrapped-2_0
+          useSystemNim = false;
+          zerokitRln = zerokit.packages.${system}.rln;
+        };
+
         wakucanary = pkgs.callPackage ./nix/default.nix {
           inherit stableSystems;
           src = self;
           targets = ["wakucanary"];
+          # We are not able to compile the code with nim-unwrapped-2_0
+          useSystemNim = false;
           zerokitRln = zerokit.packages.${system}.rln;
         };
 

nix/checksums.nix

@@ -8,5 +8,5 @@ in pkgs.fetchFromGitHub {
   repo = "checksums";
   rev = tools.findKeyValue "^ +ChecksumsStableCommit = \"([a-f0-9]+)\".*$" sourceFile;
   # WARNING: Requires manual updates when Nim compiler version changes.
-  hash = "sha256-Bm5iJoT2kAvcTexiLMFBa9oU5gf7d4rWjo3OiN7obWQ=";
+  hash = "sha256-JZhWqn4SrAgNw/HLzBK0rrj3WzvJ3Tv1nuDMn83KoYY=";
 }

nix/default.nix

@@ -23,7 +23,7 @@ let
 
 in stdenv.mkDerivation rec {
 
-  pname = "nwaku";
+  pname = "logos-messaging-nim";
 
   version = "1.0.0-${revision}";
 
@@ -72,6 +72,19 @@ in stdenv.mkDerivation rec {
     "USE_SYSTEM_NIM=${if useSystemNim then "1" else "0"}"
   ];
 
+  postPatch = ''
+    cat > scripts/build_rln.sh << 'EOF'
+    #!/usr/bin/env bash
+    set -e
+    build_dir=$1
+    rln_version=$2
+    output_filename=$3
+    # Just copy the library we already have
+    cp ${zerokitRln}/target/release/librln.a "$output_filename"
+    EOF
+    chmod +x scripts/build_rln.sh
+  '';
+
   configurePhase = ''
     patchShebangs . vendor/nimbus-build-system > /dev/null
     make nimbus-build-system-paths
@@ -80,17 +93,25 @@ in stdenv.mkDerivation rec {
 
   preBuild = ''
     ln -s waku.nimble waku.nims
+    
+    ${lib.optionalString (!useSystemNim) ''
     pushd vendor/nimbus-build-system/vendor/Nim
+
     mkdir dist
-    cp -r ${callPackage ./nimble.nix {}}    dist/nimble
-    cp -r ${callPackage ./checksums.nix {}} dist/checksums
-    cp -r ${callPackage ./csources.nix {}}  csources_v2
+    mkdir -p dist/nimble/vendor/sat
+    mkdir -p dist/nimble/vendor/checksums
+    mkdir -p dist/nimble/vendor/zippy
+
+    cp -r ${callPackage ./nimble.nix {}}/.    dist/nimble
+    cp -r ${callPackage ./checksums.nix {}}/. dist/checksums
+    cp -r ${callPackage ./csources.nix {}}/.  csources_v2
+    cp -r ${callPackage ./sat.nix {}}/.       dist/nimble/vendor/sat
+    cp -r ${callPackage ./checksums.nix {}}/. dist/nimble/vendor/checksums
+    cp -r ${callPackage ./zippy.nix {}}/.     dist/nimble/vendor/zippy
     chmod 777 -R dist/nimble csources_v2
+
     popd
-    cp -r ${zerokitRln}/target vendor/zerokit/
-    find vendor/zerokit/target
-    # FIXME
-    cp vendor/zerokit/target/*/release/librln.a librln_v${zerokitRln.version}.a
+    ''}
   '';
 
   installPhase = if abidir != null then ''
@@ -99,8 +120,15 @@ in stdenv.mkDerivation rec {
     echo '${androidManifest}' > $out/jni/AndroidManifest.xml
     cd $out && zip -r libwaku.aar *
   '' else ''
-    mkdir -p $out/bin
-    cp -r build/* $out/bin
+    mkdir -p $out/bin $out/include
+    
+    # Copy library files
+    cp build/*.so $out/bin/ 2>/dev/null || true
+    cp build/*.a $out/bin/ 2>/dev/null || true
+    cp build/*.dylib $out/bin/ 2>/dev/null || true
+    
+    # Copy the header file
+    cp library/libwaku.h $out/include/
   '';
 
   meta = with pkgs.lib; {

nix/nimble.nix

@@ -8,5 +8,5 @@ in pkgs.fetchFromGitHub {
   repo = "nimble";
   rev = tools.findKeyValue "^ +NimbleStableCommit = \"([a-f0-9]+)\".*$" sourceFile;
   # WARNING: Requires manual updates when Nim compiler version changes.
-  hash = "sha256-MVHf19UbOWk8Zba2scj06PxdYYOJA6OXrVyDQ9Ku6Us=";
+  hash = "sha256-8iutVgNzDtttZ7V+7S11KfLEuwhKA9TsgS51mlUI08k=";
 }

nix/shell.nix

@@ -16,6 +16,7 @@ pkgs.mkShell {
     git
     cargo
     rustup
+    rustc
     cmake
     nim-unwrapped-2_0
   ];

nix/zippy.nix

@@ -0,0 +1,9 @@
+{ pkgs }:
+
+pkgs.fetchFromGitHub {
+  owner = "guzba";
+  repo = "zippy";
+  rev = "a99f6a7d8a8e3e0213b3cad0daf0ea974bf58e3f";
+  # WARNING: Requires manual updates when Nim compiler version changes.
+  hash = "sha256-e2ma2Oyp0dlNx8pJsdZl5o5KnaoAX87tqfY0RLG3DZs=";
+}