NVM_HAS_COLORS unbound variable in shell scripts running in Github Actions Ubuntu images

[jobackman]

Operating system and version:

Github actions CI runner: https://github.com/actions/runner-images/blob/ubuntu20/20221024.1/images/linux/Ubuntu2004-Readme.md

nvm debug output:

Run source $HOME/.nvm/nvm.sh
  source $HOME/.nvm/nvm.sh
  nvm debug
  shell: /usr/bin/bash --noprofile --norc -e -o pipefail {0}
nvm --version: v0.39.[2](https://github.com/jobackman/nvm-unbound-variable/actions/runs/3329175279/jobs/5506057361#step:5:2)
$SHELL: /bin/bash
$SHLVL: 1
whoami: 'runner'
${HOME}: /home/runner
${NVM_DIR}: '${HOME}/.nvm'
${PATH}: ${HOME}/.local/bin:/opt/pipx_bin:${HOME}/.cargo/bin:${HOME}/.config/composer/vendor/bin:/usr/local/.ghcup/bin:${HOME}/.dotnet/tools:/snap/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
$PREFIX: ''
${NPM_CONFIG_PREFIX}: ''
$NVM_NODEJS_ORG_MIRROR: ''
$NVM_IOJS_ORG_MIRROR: ''
shell version: 'GNU bash, version 5.0.17(1)-release (x86_64-pc-linux-gnu)'
uname -a: 'Linux 5.15.0-1022-azure #27~20.04.1-Ubuntu SMP Mon Oct 17 02:0[3](https://github.com/jobackman/nvm-unbound-variable/actions/runs/3329175279/jobs/5506057361#step:5:3):50 UTC 2022 x86_6[4](https://github.com/jobackman/nvm-unbound-variable/actions/runs/3329175279/jobs/5506057361#step:5:4) x86_64 x86_64 GNU/Linux'
checksum binary: 'sha2[5](https://github.com/jobackman/nvm-unbound-variable/actions/runs/3329175279/jobs/5506057361#step:5:6)[6](https://github.com/jobackman/nvm-unbound-variable/actions/runs/3329175279/jobs/5506057361#step:5:7)sum'
OS version: Ubuntu 20.04.5 LTS  
curl: /usr/bin/curl, curl [7](https://github.com/jobackman/nvm-unbound-variable/actions/runs/3329175279/jobs/5506057361#step:5:8).6[8](https://github.com/jobackman/nvm-unbound-variable/actions/runs/3329175279/jobs/5506057361#step:5:9).0 (x86_64-pc-linux-gnu) libcurl/7.68.0 OpenSSL/1.1.1f zlib/1.2.11 brotli/1.0.7 libidn2/2.2.0 libpsl/0.21.0 (+libidn2/2.2.0) libssh/0.[9](https://github.com/jobackman/nvm-unbound-variable/actions/runs/3329175279/jobs/5506057361#step:5:10).3/openssl/zlib nghttp2/1.40.0 librtmp/2.3
wget: /usr/bin/wget, GNU Wget 1.[20](https://github.com/jobackman/nvm-unbound-variable/actions/runs/3329175279/jobs/5506057361#step:5:21).3 built on linux-gnu.
git: /usr/bin/git, git version 2.38.1
grep: /usr/bin/grep, grep (GNU grep) 3.4
awk: /usr/bin/awk, GNU Awk 5.0.1, API: 2.0 (GNU MPFR 4.0.2, GNU MP 6.2.0)
sed: /usr/bin/sed, sed (GNU sed) 4.7
cut: /usr/bin/cut, cut (GNU coreutils) 8.30
basename: /usr/bin/basename, basename (GNU coreutils) 8.30
rm: /usr/bin/rm, rm (GNU coreutils) 8.30
mkdir: /usr/bin/mkdir, mkdir (GNU coreutils) 8.30
xargs: /usr/bin/xargs, xargs (GNU findutils) 4.7.0
nvm current: system
which node: /usr/local/bin/node
which iojs: 
which npm: /usr/local/bin/npm
npm config get prefix: /usr/local
npm root -g: /usr/local/lib/node_modules

nvm ls output:

Getting this output on the runner is the issue

How did you install nvm?

Preinstalled on the github actions runner image: https://github.com/actions/runner-images/blob/ubuntu20/20221024.1/images/linux/Ubuntu2004-Readme.md

What steps did you perform?

• Make a workflow for a github actions ubuntu-latest/20.04 run
• Have a shellscript with the set -u flag enabled
• Source nvm
• Run nvm list

This fails

with-u-opt.sh

#! /bin/bash
set -u pipefail
source $HOME/.nvm/nvm.sh
nvm list

 -run: ./with-u-opt.sh

This works

without-u-opt.sh

#! /bin/bash
source $HOME/.nvm/nvm.sh
nvm list

 -run: ./without-u-opt.sh

What happened?

Example run from reproduction repo

/home/runner/.nvm/nvm.sh: line 1695: NVM_HAS_COLORS: unbound variable
Error: Process completed with exit code 1.

What did you expect to happen?

In v0.39.1 this error did not happen on the runner but after the latest image, which upgraded nvm to v0.39.2

I believe this has been the case since #2827 was merged

Reproduction repository:

https://github.com/jobackman/nvm-unbound-variable

Example run

Is there anything in any of your profile files that modifies the PATH?

Nope

If you are having installation issues, or getting "N/A", what does curl -I --compressed -v https://nodejs.org/dist/ print out?

[ljharb]

Thanks for the report.

[ljharb]

I'll be releasing a v0.39.3 today, which will include this fix.