Error running plutus-playground-client in Linux

Question

I have successfully installed nix, cabal and have setup the IOHK binary cache. I cloned the plutus-app repository and successfully built the Haskell packages and other artifacts with nix. Then running nix-shell successfully I get into the nix-shell prompt:

[nix-shell:/home/datapool/plutus-apps]$

I then issue the following commands:

[nix-shell:/home/datapool/plutus-apps]$ cd plutus-playground-client
[nix-shell:/home/datapool/plutus-apps/plutus-playground-client]$ npm run start

I then get this output:

> [email protected] start /home/datapool/plutus-apps/plutus-playground-client
> plutus-playground-generate-purs && npm install && npm run install:spago && npm run build:webpack:dev

 /nix/store/ry2hywgh6cmmm9d5b9566nxdskd752yc-plutus-playground-generate-purs/bin/plutus-playground-generate-purs: line 6: /bin/plutus-playground-server: No such file or directory
 npm ERR! code ELIFECYCLE
 npm ERR! syscall spawn
 npm ERR! file sh
 npm ERR! errno ENOENT
 npm ERR! [email protected] start: `plutus-playground-generate-purs && 
 npm install && npm run install:spago && npm run build:webpack:dev`
 npm ERR! spawn ENOENT
 npm ERR! 
 npm ERR! Failed at the [email protected] start 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/brightchip/.npm/_logs/2022-01-12T13_05_31_245Z-debug.log

As the output says, it seems to be looking for a non-existent /bin/plutus-playground-server.

Same problem when I run the server:

[nix-shell:/home/datapool/plutus-apps/plutus-playground-client]$ plutus-playground-server
plutus-playground-server: for development use only
/nix/store/fm77y43lzpgnay4pyc48jwpln0lnmrk3-plutus-playground-server/bin/plutus-playground-server: line 10: /bin/plutus-playground-server: No such file or directory

Any idea what I might be missing or how to debug?

Answer 1

Looks related to an issue I ran into where the directories were missing. I needed to git checkout a patch.

Possible solution - https://cardano.stackexchange.com/a/6251/6004

The instructions are at :

https://tutorials.cardanoacademy.io/plutus-pioneer-program/setting-up-plutus-playground/cloning-plutus-repository

Answer 2

Thanks. The patch works:

git checkout 3746610e53654a1167aeb4c6294c6096d16b0502

Answer 3

I don't know exactly why, but doing this fixed it for me:

# In the plutus-apps folder
GC_DONT_GC=1 nix-build ./default.nix -A plutus-apps.haskell.packages.plutus-playground-server.components.exes.plutus-playground-server
# That will build a bash script somewhere (in store)
# edit that file located in this path:
whereis plutus-playground-server
# replace subshell (in Line 10) with the path from last nix-build command
# edit the file from this path: /nix/store/*-plutus-playground-generate-purs/bin/plutus-playground-generate-purs
# replace subshell (in Line 6) with the path from last nix-build command
cd plutus-playground-client
nix-shell
plutus-playground-server

Source: https://github.com/NixOS/nix/issues/4246#issuecomment-738888246