Installing the purescript npm package fails

[skykanin]

Description

Installing purescript through npm i -g purescript fails with output shown underneath. Also tried installing the package in a local project, but got the same error.
Full debug log here

npm WARN deprecated request@2.88.2: request has been deprecated, see https://github.com/request/request/issues/3142
/home/skykanin/.npm-global/bin/purs -> /home/skykanin/.npm-global/lib/node_modules/purescript/purs.bin

> purescript@0.13.6 postinstall /home/skykanin/.npm-global/lib/node_modules/purescript
> install-purescript --purs-ver=0.13.6

✔ Check if a prebuilt 0.13.6 binary is provided for linux (1s)
✔ Download the prebuilt PureScript binary (9s)
✖ Verify the prebuilt binary works correctly
  /home/skykanin/.npm-global/lib/node_modules/purescript/purs.bin --version
  Error: spawn /home/skykanin/.npm-global/lib/node_modules/purescript/purs.bin ENOENT
    at Process.ChildProcess._handle.onexit (internal/child_process.js:268:19)
    at onErrorNT (internal/child_process.js:468:16)
    at processTicksAndRejections (internal/process/task_queues.js:84:21)
▬ Save the downloaded binary to the npm cache directory

↓ Fallback: building from source

✖ Check if 'stack' command is available
  stack --allow-different-user --numeric-version
  Error: Command failed with exit code 2 (ENOENT): stack --allow-different-user --numeric-version
spawn stack ENOENT
    at Process.ChildProcess._handle.onexit (internal/child_process.js:268:19)
    at onErrorNT (internal/child_process.js:468:16)
    at processTicksAndRejections (internal/process/task_queues.js:84:21)
▬ Download the PureScript 0.13.6 source
▬ Ensure the appropriate GHC is installed
▬ Build a binary from source
▬ Save the built binary to the npm cache directory

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! purescript@0.13.6 postinstall: `install-purescript --purs-ver=0.13.6`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the purescript@0.13.6 postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/skykanin/.npm/_logs/2020-05-07T17_45_44_600Z-debug.log

To Reproduce

1. Run npm i -g purescript

Expected behavior

I expect the package to install correctly without failure.

Additional context

OS Info:

• OS: NixOS 20.09 (Nightingale) x86_64
• Kernel: 5.6.7
• CPU: Intel i5-6600 (4) @ 3.900GHz
• GPU: NVIDIA GeForce GTX 1070
• Memory: 15963MiB

Npm info:

• Npm version: 6.14.4
• Npm config:
• File: /home/skykanin/.npmrc
  • prefix=~/.npm-global

Allows npm packages to be installed globally on NixOS

PureScript version

0.13.6

[hdgarrood]

Thanks for the report!

[hdgarrood]

This looks similar to #16

[hdgarrood]

Can you check whether a file /home/skykanin/.npm-global/lib/node_modules/purescript/purs.bin exists directly after running this command? Also, if so, can you post the output of ldd /home/skykanin/.npm-global/lib/node_modules/purescript/purs.bin please?

[hdgarrood]

Oh also, is there a file /lib64/ld-linux-x86-64.so.2 on your system?

[skykanin]

There is no /home/skykanin/.npm-global/lib/node_modules/purescript directory after running the install command, nor is there a /lib64/ld-linux-x86-64.so.2 file on my system

[hdgarrood]

Ok, thanks. The file lib64/ld-linux-x86-64.so.2 is the dynamic loader for the purs binary, so if it doesn't exist on your system, it means that the prebuilt binaries aren't suitable for your system. You'll have to build the compiler from source. Hopefully, that should be as simple as getting stack installed and on your PATH, and rerunning npm i -g purescript.

[skykanin]

After installing stack npm i -g purescript now fails on a different step Ensure the appropriate GHC is installed. I have GHC version 8.6.5 installed. Is a different version required to build purescript 0.13.6?

[hdgarrood]

That seems odd, stack should take care of installing the appropriate GHC for you. Could you post the whole output please?

[skykanin]

npm WARN deprecated request@2.88.2: request has been deprecated, see https://github.com/request/request/issues/3142
/home/skykanin/.npm-global/bin/purs -> /home/skykanin/.npm-global/lib/node_modules/purescript/purs.bin

> purescript@0.13.6 postinstall /home/skykanin/.npm-global/lib/node_modules/purescript
> install-purescript --purs-ver=0.13.6

✔ Check if a prebuilt 0.13.6 binary is provided for linux (1s)
✔ Download the prebuilt PureScript binary (10s)
✖ Verify the prebuilt binary works correctly
  /home/skykanin/.npm-global/lib/node_modules/purescript/purs.bin --version
  Error: spawn /home/skykanin/.npm-global/lib/node_modules/purescript/purs.bin ENOENT
    at Process.ChildProcess._handle.onexit (internal/child_process.js:268:19)
    at onErrorNT (internal/child_process.js:468:16)
    at processTicksAndRejections (internal/process/task_queues.js:84:21)
▬ Save the downloaded binary to the npm cache directory

↓ Fallback: building from source

✔ Check if 'stack' command is available
	2.1.3.1 found at /home/skykanin/.nix-profile/bin/stack
✔ Download the PureScript 0.13.6 source (2s)
✖ Ensure the appropriate GHC is installed (2m)
  stack setup
  Error: Command failed with exit code 1 (EPERM): stack --allow-different-user setup
    at makeError (/home/skykanin/.npm-global/lib/node_modules/purescript/node_modules/execa/lib/error.js:59:11)
    at handlePromise (/home/skykanin/.npm-global/lib/node_modules/purescript/node_modules/execa/index.js:112:26)
    at runMicrotasks (<anonymous>)
    at processTicksAndRejections (internal/process/task_queues.js:97:5)
▬ Build a binary from source
▬ Save the built binary to the npm cache directory

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! purescript@0.13.6 postinstall: `install-purescript --purs-ver=0.13.6`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the purescript@0.13.6 postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/skykanin/.npm/_logs/2020-05-08T14_28_15_246Z-debug.log

[hdgarrood]

Thanks. The EPERM suggests a permissions error. Unfortunately it's not clear from the error message what the program was trying to do which caused this error. Could you please try downloading the PureScript sources manually and running the same command? That is:

$ stack update
$ stack unpack purescript
$ cd purescript-0.13.6
$ stack setup

[skykanin]

On the last step stack setup I get this error I don't know how to install GHC on your system configuration, please install manually

[skykanin]

Ok, I think I found the issue. In the purescript source code stack.yaml file nix is disabled which causes the setup to fail on nix systems. So I changed it to true which fixed the issue. Not sure how you would fix this for the npm install script tho

[hdgarrood]

Maybe we could try to detect whether we are on a nix system and pass the --nix flag to Stack, which should have the same effect? I'm not sure.

[skykanin]

Yes, that sounds like it would fix the issue