Provide option to not build the GUI

[ddombrowsky]

It would be nice if ./scripts/build.sh had an option to ignore the GUI build.

I often run into cases where the GUI will not build due to version conflicts between exact versions of npm, yarn, node, and a host of other things. I don't use the GUI do it would be nice to have the option of only building the kelp binary.

e.g., in v1.12.0, the GUI fails to build for me, because it's trying to use node-gyp to build paltform-specific bindings a specific version of node-sass:

In file included from /home/davek/.node-gyp/16.13.0/include/node/v8.h:30,
                 from /home/davek/.node-gyp/16.13.0/include/node/node.h:63,
                 from ../../nan/nan.h:58,
                 from ../src/binding.cpp:1:
/home/davek/.node-gyp/16.13.0/include/node/v8-internal.h: In function ‘void v8::internal::PerformCastCheck(T*)’:
/home/davek/.node-gyp/16.13.0/include/node/v8-internal.h:492:38: error: ‘remove_cv_t’ is not a member of ‘std’; did you mean ‘remove_cv’?
  492 |             !std::is_same<Data, std::remove_cv_t<T>>::value>::Perform(data);
      |                                      ^~~~~~~~~~~
      |                                      remove_cv

I'm sure the root cause of the error is on my side, but it would be nice if I could just ignore the GUI build instead of tracking it down.

[ddombrowsky]

For the record, yarn simply refuses to install packages correctly for me. I have terrible luck with that package manager. Switching to npm fixes the build:

+++ b/scripts/build.sh
@@ -17,7 +17,7 @@ function install_web_dependencies() {
     CURRENT_DIR=`pwd`
     cd $CURRENT_DIR/gui/web

-    yarn install
+    npm install
     check_build_result $?

     cd $CURRENT_DIR
@@ -30,7 +30,7 @@ function generate_static_web_files() {
     CURRENT_DIR=`pwd`
     cd $CURRENT_DIR/gui/web

-    yarn build
+    npm build
     check_build_result $?

     cd $CURRENT_DIR

Build successful:

$ ./bin/kelp version
  cli version: master:v1.12.0-dirty
  gui version: v1.0.0-rc2
  git branch: master
  git hash: 01389b845ea88949e81caf96223c8c97eb56ea4a-dirty
  build date: 20211126T162722Z
  build type: cli
  env: dev
  GOOS: linux
  GOARCH: amd64

[dpblnt]

For the record, yarn simply refuses to install packages correctly for me. I have terrible luck with that package manager.

same here

installing web dependencies ...
yarn install v1.22.10
[1/4] Resolving packages...
[2/4] Fetching packages...
[-----------------------------------------------------------------------------------------------------------------------------------------------] 0/1485./scripts/build.sh: line 15: 15356 Segmentation fault      yarn install

build failed with error code 139