implement a shell context manipulation macro

[retrogradeorbit]

Often the context of running shells needs to be mainuplated for a bunch of shell commands. I propose a shell context macro. Something like

(with-shell-context {:cmd-prefix ". .nvm/nvm.sh"}
    (shell {:cmd "nvm install 12.18.2"})
    (shell {:cmd "nvm alias default node"}))

or

(with-shell-context {:env {:NVM_BIN "/home/crispin/.nvm/versions/node/v12.18.2/bin"
                           :NVM_CD_FLAGS ""
                           :NVM_DIR "/home/crispin/.nvm"
                           :NVM_INC "/home/crispin/.nvm/versions/node/v12.18.2/include/node"}}
    (shell {:cmd "nvm alias default node"})
    (shell {:cmd "npx electron-packager . tilemapgl --platform=win32 --arch=x64"}))

[tomconnors]

Would this macro reuse the shell across calls to the module so that nvm.sh is only sourced one time, or would the macro just handle adding the ". .nvm/nvm" prefix to each shell call? If it's the latter, I don't think spire needs to provide this.

[retrogradeorbit]

It would prefix the call to each invocation. It still could be a convenience function. It might also be useful for a common environment variable setting like PATH.