opam tree causes error when used with --with-doc

[smorimoto]

Actual error:

❯ opam tree ./hello.opam --json=tmp.json --test --doc
Constructing initial basis...
Number of 0-1 knapsack inequalities = 5983
Constructing conflict graph...
Conflict graph has 1395 + 699 = 2094 vertices
[ERROR] Could not simulate installing the specified package(s) to this switch:
The actions to process have cyclic dependencies:
  - install odoc (= 25) -> install camlp-streams (= 2) -> install odoc-parser (= 6) -> install odoc (= 25)

This is likely related to: #4541

[ElectreAAS]

Looking into it!

[ElectreAAS]

Could you paste the contents of your hello.opam file (or a redacted subset) please? I have a hard time reproducing this

[kit-ty-kate]

@ElectreAAS using

opam-version: "2.0"
depends: [
  "odoc" {with-doc}
]

in a switch where you have odoc installed i can reproduce it locally using the command above

[kit-ty-kate]

I'm also seeing a different unexpected output when given --no-switch on top of that:

$ opam tree ./hello.opam --test --doc --no-switch
The following actions are simulated:
=== install 1 package
  ∗ hello dev

hello.dev

we expect odoc to be present in the tree but it's not currently.