[nix] patch realm as a nodePackage for linux and darwin and use it from nix store, add to default nix-shell buildDependencies, regenerate nodePackages with node2nix 1.6.1

Makefile

@@ -140,11 +140,11 @@ desktop-server:
 # -------------
 _run-%:
 	$(eval SYSTEM := $(word 2, $(subst -, , $@)))
-	react-native run-$(SYSTEM)
+	npx react-native run-$(SYSTEM)
 
 run-android: export TARGET_OS ?= android
 run-android: ##@run Run Android build
-	react-native run-android --appIdSuffix debug
+	npx react-native run-android --appIdSuffix debug
 
 run-desktop: export TARGET_OS ?= $(HOST_OS)
 run-desktop: _run-desktop ##@run Run Desktop build
@@ -153,9 +153,9 @@ SIMULATOR=
 run-ios: export TARGET_OS ?= ios
 run-ios: ##@run Run iOS build
 ifneq ("$(SIMULATOR)", "")
-	react-native run-ios --simulator="$(SIMULATOR)"
+	npx react-native run-ios --simulator="$(SIMULATOR)"
 else
-	react-native run-ios
+	npx react-native run-ios
 endif
 
 #--------------

derivation.nix

@@ -8,12 +8,12 @@ let
   # TODO: Try to use stdenv for iOS. The problem is with building iOS as the build is trying to pass parameters to Apple's ld that are meant for GNU's ld (e.g. -dynamiclib)
   stdenv' = pkgs.stdenvNoCC;
   gradle = pkgs.gradle_4_10;
-  statusDesktop = pkgs.callPackage ./nix/desktop { inherit target-os status-go; inherit (pkgs) darwin; stdenv = stdenv'; };
+  statusDesktop = pkgs.callPackage ./nix/desktop { inherit target-os status-go; inherit (pkgs) darwin; nodejs = nodejs'; stdenv = stdenv'; };
   statusMobile = pkgs.callPackage ./nix/mobile { inherit target-os config status-go gradle; inherit (pkgs.xcodeenv) composeXcodeWrapper; stdenv = stdenv'; };
   status-go = pkgs.callPackage ./nix/status-go { inherit target-os; inherit (pkgs.xcodeenv) composeXcodeWrapper; inherit (statusMobile) xcodewrapperArgs; androidPkgs = statusMobile.androidComposition; };
   nodejs' = pkgs.nodejs-10_x;
   yarn' = pkgs.yarn.override { nodejs = nodejs'; };
-  nodeInputs = import ./nix/global-node-packages/output {
+  nodeInputs = import ./nix/global-node-packages {
     # The remaining dependencies come from Nixpkgs
     inherit pkgs;
     nodejs = nodejs';

nix/desktop/default.nix

@@ -1,6 +1,6 @@
 { stdenv, callPackage, target-os,
   cmake, extra-cmake-modules, file, status-go,
-  darwin }:
+  darwin, nodejs }:
 
 with stdenv;
 

nix/global-node-packages/default.nix

@@ -0,0 +1,30 @@
+{ pkgs, nodejs }:
+
+let nodePackages = import ./output { inherit pkgs; inherit nodejs; };
+    realm-version = "5.12.1";
+    realm-patched-name = "realm-git+https://github.com/status-im/realm-js.git#heads/v2.20.1";
+    realm-core-src = pkgs.fetchurl (
+      if builtins.currentSystem == "x86_64-darwin" then {
+        url = "https://static.realm.io/downloads/core/realm-core-Release-v${realm-version}-Darwin-devel.tar.gz";
+        sha256 = "05ji1zyskwjj8p5i01kcg7h1cxdjj62fcsp6haf2f65qshp6r44d";
+      } else {
+        url = "https://static.realm.io/downloads/core/realm-core-Release-v${realm-version}-Linux-devel.tar.gz";
+        sha256 = "02pvi28qnvzdv7ghqzf79bxn8id9s7mpp3g2ambxg8jrcrkqfvr1";
+      }
+    );
+    realm-dest-dir = if builtins.currentSystem == "x86_64-darwin" then
+      "$out/lib/node_modules/realm/vendor/realm-darwin-x64" else
+      "$out/lib/node_modules/realm/vendor/realm-linux-x64";
+in nodePackages // {
+  ${realm-patched-name} = nodePackages.${realm-patched-name}.override(oldAttrs: {
+    buildInputs = oldAttrs.buildInputs ++ [ pkgs.nodePackages.node-pre-gyp ];
+    reconstructLock = true;
+    preRebuild = ''
+      # Do not attempt to do any http calls!
+      substituteInPlace $out/lib/node_modules/realm/scripts/download-realm.js \
+        --replace "return acquire(requirements, realmDir)" ""
+      mkdir -p ${realm-dest-dir}
+      tar -xzf ${realm-core-src} -C ${realm-dest-dir}
+    '';
+  });
+}

nix/global-node-packages/generate-nix.sh

@@ -11,13 +11,15 @@ rm -rf $output_dir && mkdir -p $output_dir
 react_native_cli_required_version=$($toolversion react_native_cli)
 cat << EOF > $input
 [
-    { "react-native-cli": "${react_native_cli_required_version}" }
+    { "react-native-cli": "${react_native_cli_required_version}",
+      "realm": "git+https://github.com/status-im/realm-js.git#heads/v2.20.1" }
 ]
 EOF
 
 node_required_version=$($toolversion node)
 node_major_version=$(echo $node_required_version | cut -d. -f1,1)
-node2nix --nodejs-${node_major_version} --bypass-cache -i $input \
+
+node2nix --nodejs-${node_major_version} -i $input \
          -o $output_dir/node-packages.nix \
          -c $output_dir/default.nix \
          -e $output_dir/node-env.nix

nix/global-node-packages/output/default.nix

@@ -1,4 +1,4 @@
-# This file has been generated by node2nix 1.6.0. Do not edit!
+# This file has been generated by node2nix 1.6.1. Do not edit!
 
 {pkgs ? import <nixpkgs> {
     inherit system;

nix/global-node-packages/output/node-env.nix

@@ -72,7 +72,7 @@ let
           packageDir="$(find . -maxdepth 1 -type d | tail -1)"
 
           # Restore write permissions to make building work
-          find "$packageDir" -type d -print0 | xargs -0 chmod u+x
+          find "$packageDir" -type d -exec chmod u+x {} \;
           chmod -R u+w "$packageDir"
 
           # Move the extracted tarball into the output folder
@@ -308,6 +308,61 @@ let
     '';
   };
 
+  prepareAndInvokeNPM = {packageName, bypassCache, reconstructLock, npmFlags, production}:
+    let
+      forceOfflineFlag = if bypassCache then "--offline" else "--registry http://www.example.com";
+    in
+    ''
+        # Pinpoint the versions of all dependencies to the ones that are actually being used
+        echo "pinpointing versions of dependencies..."
+        source $pinpointDependenciesScriptPath
+
+        # Patch the shebangs of the bundled modules to prevent them from
+        # calling executables outside the Nix store as much as possible
+        patchShebangs .
+
+        # Deploy the Node.js package by running npm install. Since the
+        # dependencies have been provided already by ourselves, it should not
+        # attempt to install them again, which is good, because we want to make
+        # it Nix's responsibility. If it needs to install any dependencies
+        # anyway (e.g. because the dependency parameters are
+        # incomplete/incorrect), it fails.
+        #
+        # The other responsibilities of NPM are kept -- version checks, build
+        # steps, postprocessing etc.
+
+        export HOME=$TMPDIR
+        cd "${packageName}"
+        runHook preRebuild
+
+        ${stdenv.lib.optionalString bypassCache ''
+          ${stdenv.lib.optionalString reconstructLock ''
+            if [ -f package-lock.json ]
+            then
+                echo "WARNING: Reconstruct lock option enabled, but a lock file already exists!"
+                echo "This will most likely result in version mismatches! We will remove the lock file and regenerate it!"
+                rm package-lock.json
+            else
+                echo "No package-lock.json file found, reconstructing..."
+            fi
+
+            node ${reconstructPackageLock}
+          ''}
+
+          node ${addIntegrityFieldsScript}
+        ''}
+
+        npm ${forceOfflineFlag} --nodedir=${nodeSources} ${npmFlags} ${stdenv.lib.optionalString production "--production"} rebuild
+
+        if [ "$dontNpmInstall" != "1" ]
+        then
+            # NPM tries to download packages even when they already exist if npm-shrinkwrap is used.
+            rm -f npm-shrinkwrap.json
+
+            npm ${forceOfflineFlag} --nodedir=${nodeSources} ${npmFlags} ${stdenv.lib.optionalString production "--production"} install
+        fi
+    '';
+
   # Builds and composes an NPM package including all its dependencies
   buildNodePackage =
     { name
@@ -319,6 +374,7 @@ let
     , npmFlags ? ""
     , dontNpmInstall ? false
     , bypassCache ? false
+    , reconstructLock ? false
     , preRebuild ? ""
     , dontStrip ? true
     , unpackPhase ? "true"
@@ -326,7 +382,6 @@ let
     , ... }@args:
 
     let
-      forceOfflineFlag = if bypassCache then "--offline" else "--registry http://www.example.com";
       extraArgs = removeAttrs args [ "name" "dependencies" "buildInputs" "dontStrip" "dontNpmInstall" "preRebuild" "unpackPhase" "buildPhase" ];
     in
     stdenv.mkDerivation ({
@@ -352,47 +407,7 @@ let
         # Compose the package and all its dependencies
         source $compositionScriptPath
 
-        # Pinpoint the versions of all dependencies to the ones that are actually being used
+        ${prepareAndInvokeNPM { inherit packageName bypassCache reconstructLock npmFlags production; }}
-        echo "pinpointing versions of dependencies..."
-        source $pinpointDependenciesScriptPath
-
-        # Patch the shebangs of the bundled modules to prevent them from
-        # calling executables outside the Nix store as much as possible
-        patchShebangs .
-
-        # Deploy the Node.js package by running npm install. Since the
-        # dependencies have been provided already by ourselves, it should not
-        # attempt to install them again, which is good, because we want to make
-        # it Nix's responsibility. If it needs to install any dependencies
-        # anyway (e.g. because the dependency parameters are
-        # incomplete/incorrect), it fails.
-        #
-        # The other responsibilities of NPM are kept -- version checks, build
-        # steps, postprocessing etc.
-
-        export HOME=$TMPDIR
-        cd "${packageName}"
-        runHook preRebuild
-
-        ${stdenv.lib.optionalString bypassCache ''
-          if [ ! -f package-lock.json ]
-          then
-              echo "No package-lock.json file found, reconstructing..."
-              node ${reconstructPackageLock}
-          fi
-
-          node ${addIntegrityFieldsScript}
-        ''}
-
-        npm ${forceOfflineFlag} --nodedir=${nodeSources} ${npmFlags} ${stdenv.lib.optionalString production "--production"} rebuild
-
-        if [ "$dontNpmInstall" != "1" ]
-        then
-            # NPM tries to download packages even when they already exist if npm-shrinkwrap is used.
-            rm -f npm-shrinkwrap.json
-
-            npm ${forceOfflineFlag} --nodedir=${nodeSources} ${npmFlags} ${stdenv.lib.optionalString production "--production"} install
-        fi
 
         # Create symlink to the deployed executable folder, if applicable
         if [ -d "$out/lib/node_modules/.bin" ]
@@ -431,14 +446,13 @@ let
     , npmFlags ? ""
     , dontNpmInstall ? false
     , bypassCache ? false
+    , reconstructLock ? false
     , dontStrip ? true
     , unpackPhase ? "true"
     , buildPhase ? "true"
     , ... }@args:
 
     let
-      forceOfflineFlag = if bypassCache then "--offline" else "--registry http://www.example.com";
-
       extraArgs = removeAttrs args [ "name" "dependencies" "buildInputs" ];
 
       nodeDependencies = stdenv.mkDerivation ({
@@ -473,39 +487,13 @@ let
             fi
           ''}
 
-          # Pinpoint the versions of all dependencies to the ones that are actually being used
+          # Go to the parent folder to make sure that all packages are pinpointed
-          echo "pinpointing versions of dependencies..."
           cd ..
           ${stdenv.lib.optionalString (builtins.substring 0 1 packageName == "@") "cd .."}
 
-          source $pinpointDependenciesScriptPath
+          ${prepareAndInvokeNPM { inherit packageName bypassCache reconstructLock npmFlags production; }}
-          cd ${packageName}
-
-          # Patch the shebangs of the bundled modules to prevent them from
-          # calling executables outside the Nix store as much as possible
-          patchShebangs .
-
-          export HOME=$PWD
-
-          ${stdenv.lib.optionalString bypassCache ''
-            if [ ! -f package-lock.json ]
-            then
-                echo "No package-lock.json file found, reconstructing..."
-                node ${reconstructPackageLock}
-            fi
-
-            node ${addIntegrityFieldsScript}
-          ''}
-
-          npm ${forceOfflineFlag} --nodedir=${nodeSources} ${npmFlags} ${stdenv.lib.optionalString production "--production"} rebuild
-
-          ${stdenv.lib.optionalString (!dontNpmInstall) ''
-            # NPM tries to download packages even when they already exist if npm-shrinkwrap is used.
-            rm -f npm-shrinkwrap.json
-
-            npm ${forceOfflineFlag} --nodedir=${nodeSources} ${npmFlags} ${stdenv.lib.optionalString production "--production"} install
-          ''}
 
+          # Expose the executables that were installed
           cd ..
           ${stdenv.lib.optionalString (builtins.substring 0 1 packageName == "@") "cd .."}
 
@@ -532,6 +520,7 @@ let
       inherit nodeDependencies;
       shellHook = stdenv.lib.optionalString (dependencies != []) ''
         export NODE_PATH=$nodeDependencies/lib/node_modules
+        export PATH="$nodeDependencies/bin:$PATH"
       '';
     };
 in