Option to limit depth of the dependency tree shown

[miguelbarao]

It would be nice to have an option -d N or --depth N to limit the depth of the tree shown either in direct dependencies or reverse. This would also help to find packages left behind when other packages are removed (leaves).

[naiquevin]

Sounds like a good feature. But didn't understand the use case correctly. You mean before removing a package, it can be used for finding out which dependencies will be left behind?

[miguelbarao]

I mean to find packages without reverse dependencies that can be removed. Using pipdeptree -r -a produces a vey long list (hundreds of lines) which is not simple to inspect visually. pipdeptree -r -a -d 1 would be useful here. If a package shows no rev-deps and is not useful by itself, it can be removed.

Something equivalent to this: pipdeptree -r -a | grep -v "^[ ]\{4,4\}"

[mumrau]

It would also simplify one of the best (to me at least) usage of pipdeptree which is nothing more than doing pipdeptree -f --warn silence | grep -P '^[\w0-9\-=.]+' > requirements.txt . pipdeptree -f -d 1 would simplify it a very very lot.

[clysto]

this will list installed packages that are not dependencies of another installed package: (use ripgrep & sed)

pipdeptree --r -a | rg -U "^[^ ].*\n[^ ].*\n" | sed -n "p;n"

[mon-jai]

+1 for this.

[kemzeb]

@gaborbernat We should close this as its been resolved in v2.9.0.