Ghostscript Requirement

[jameson0496]

When opening a document with PDF images (specifically a typst document, not tested on other file formats), I get an error about the command 'gs' not being found:

...nvim/lazy/image.nvim/lua/image/processors/magick_cli.lua:115: sh: line 1: gs: command not found                                                                                                                                            
identify: FailedToExecuteCommand `'gs' -sstdout=%stderr -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 '-sDEVICE=png16malpha' -dTextAlphaBits=4 -dGraphicsAlphaBits=4 '-r72x72' -dPrinted=f
alse  '-sOutputFile=/tmp/nix-shell-111807-2176585950/magick-7u_VuIfAffICPKYYbLSGSN1hcq7PFuRa%d' '-f/tmp/nix-shell-111807-2176585950/magick-_nLrES0JB748eAdUmDaNkMl_SyYHlUzy' '-f/tmp/nix-shell-111807-2176585950/magick-I_W98t-7tVzXcF7Kcx5g8Z5
sBs5VnTNG'' (32512) @ error/ghostscript-private.h/ExecuteGhostscriptCommand/75.                                                                                                                                                               
                                                                                                                                                                                                                                              
stack traceback:                                                                                                                                                                                                                              
        [C]: in function 'error'                                                                                                                                                                                                              
        ...nvim/lazy/image.nvim/lua/image/processors/magick_cli.lua:115: in function <...nvim/lazy/image.nvim/lua/image/processors/magick_cli.lua:114>                                                                                        
        [C]: in function 'wait'                                                                                                                                                                                                               
        ...nvim/lazy/image.nvim/lua/image/processors/magick_cli.lua:130: in function 'get_dimensions'                                                                                                                                         
        ...jw/.local/share/nvim/lazy/image.nvim/lua/image/image.lua:329: in function <...jw/.local/share/nvim/lazy/image.nvim/lua/image/image.lua:251>                                                                                        
        [C]: in function 'pcall'                                                                                                                                                                                                              
        .../share/nvim/lazy/image.nvim/lua/image/utils/document.lua:238: in function 'process_image_queue'                                                                                                                                    
        .../share/nvim/lazy/image.nvim/lua/image/utils/document.lua:309: in function 'render'                                                                                                                                                 
        .../share/nvim/lazy/image.nvim/lua/image/utils/document.lua:314: in function 'callback'                                                                                                                                               
        ...vim/lazy/image.nvim/lua/image/utils/render_scheduler.lua:18: in function <...vim/lazy/image.nvim/lua/image/utils/render_scheduler.lua:13>                                                                                          

After a quick search online, I installed Ghostscript and the error went away. Does image.nvim make any calls to Ghostscript or is this command generated by ImageMagick? I looked through the code and didn't notice any calls, but I'm also not super fluent in Lua. Either way, a note in the README on Ghostscript being a requirement for PDF images could be helpful, given that Magick does not explicitly require it for installation (The recommended NixOS package does not install it as a dependency).

NixOS (Unstable), Neovim v0.12.3, Ueberzug backend, magick_cli processor. This plugin works great, not having images in my notes was my last holdout for moving to Neovim from my GUI notes app.

Thanks!