Errors building project with yarn, cannot resolve dependencies?

[rgobo]

Building on windows 10, I installed yarn with the installer from the official site (version 1.22.4)
When I move to the overlay folder and run "yarn install", I get the following output:

$ yarn install
yarn install v1.22.4
warning package.json: No license field
warning data-core@0.0.1: No license field
[1/4] Resolving packages...
[2/4] Fetching packages...
info fsevents@1.2.12: The platform "win32" is incompatible with this module.
info "fsevents@1.2.12" is an optional dependency and failed compatibility check. Excluding it from installation.
[3/4] Linking dependencies...
[4/4] Building fresh packages...
[1/6] ⡀ iohook
[2/6] ⡀ robotjs
[3/6] ⢀ windows-foreground-love
[4/6] ⢀ electron
error C:\dev\Projects\GW2 Data Pad\gw2-data-pad\overlay\node_modules\windows-foreground-love: Command failed.
Exit code: 1
Command: node-gyp rebuild
Arguments:
Directory: C:\dev\Projects\GW2 Data Pad\gw2-data-pad\overlay\node_modules\windows-foreground-love
Output:
C:\dev\Projects\GW2 Data Pad\gw2-data-pad\overlay\node_modules\windows-foreground-love>if not defined npm_config_node_gyp (node "C:\Program Files\nodejs\node_modules\npm\bin\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node-gyp.js" rebuild )  else (node "" rebuild )
gyp info it worked if it ends with ok
gyp info using node-gyp@3.8.0
gyp info using node@10.15.3 | win32 | x64
gyp ERR! configure error
gyp ERR! stack Error: Command failed: C:\Users\username\AppData\Local\Programs\Python\Python37-32\python.EXE -c import sys; print "%s.%s.%s" % sys.version_info[:3];
gyp ERR! stack   File "<string>", line 1
gyp ERR! stack     import sys; print "%s.%s.%s" % sys.version_info[:3];
gyp ERR! stack                                ^
gyp ERR! stack SyntaxError: invalid syntax
gyp ERR! stack
gyp ERR! stack     at ChildProcess.exithandler (child_process.js:294:12)
gyp ERR! stack     at ChildProcess.emit (events.js:189:13)
gyp ERR! stack     at maybeClose (internal/child_process.js:970:16)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:259:5)
gyp ERR! System Windows_NT 10.0.18362
gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
gyp ERR! cwd C:\dev\Projects\GW2 Data Pad\gw2-data-pad\overlay\node_modules\windows-foreground-love

I'm not that familiar with yarn so I don't know if it should handle all dependencies or if I need some stuff installed on my own. It looks like maybe the python version is not compatible? In any case, just dropping a report here, maybe someone else got it as well.

[nminchow]

I don't suspect that this is an issue with yarn. More probably a python version issue, possibly triggered by an old npm version. Are you running python 3.7.x locally? Can you try an npm upgrade? npm i npm -g

[rgobo]

python -V says I'm running 3.7.1

I ran npm i npm -g as you said, it updated a bunch of packages. npm -v says its current version is 6.14.5.

I went back to the overlay folder, ran yarn install again but got the same error:

AppData\Local\Programs\Python\Python37-32\python.EXE -c import sys; print "%s.%s.%s" % sys.version_info[:3]; gyp ERR! stack File "<string>", line 1 gyp ERR! stack import sys; print "%s.%s.%s" % sys.version_info[:3];

After some more googling, it seems like this is a node-gpy issue - it needs python 2.7 to run despite the requirements saying newer versions will work.

nodejs/node-gyp#1268

nodejs/node-gyp#1825

I'm not really interested in downgrading so I won't be trying this fix though... but at least good to know I guess.

[nminchow]

Yeah, I had seen those as well, that was the impetus for my first question, but this thread indicates that a newer versions of gyp should work with newer python: nodejs/node-gyp#1977.

If you want to give this one more shot, it might be worth nuking your local node_modules and trying a fresh install. It looks like you should be getting a new enough version of gyp.