install_mkdir
Diagnostic `nanook::cli::install_mkdir`
Summary
failed to create directory `{0}`
Help
the parent path is not writable : pick a different --to
Details
When this fires
nanook install tried to create_dir_all the destination's parent and got an IO error. Happens when --to points somewhere whose parent path isn't writable, when an intermediate component is actually a file (not a dir), or when SELinux/AppArmor blocks the mkdir.
What to check
Pick a destination whose parent you own (~/.local/bin), or run under sudo for system dirs.