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higman-nw 8.5.0 Not compatible ๐Ÿ‘ผ

Context

# Packages matching: installed
# Name                   # Installed # Synopsis
base-bigarray            base
base-threads             base
base-unix                base
conf-findutils           1           Virtual package relying on findutils
conf-gmp                 4           Virtual package relying on a GMP lib system installation
coq                      dev         Formal proof management system
dune                     3.1.1       Fast, portable, and opinionated build system
ocaml                    4.07.1      The OCaml compiler (virtual package)
ocaml-base-compiler      4.07.1      Official release 4.07.1
ocaml-config             1           OCaml Switch Configuration
ocaml-secondary-compiler 4.08.1-1    OCaml 4.08.1 Secondary Switch Compiler
ocamlfind                1.9.1       A library manager for OCaml
ocamlfind-secondary      1.9.1       Adds support for ocaml-secondary-compiler to ocamlfind
zarith                   1.12        Implements arithmetic and logical operations over arbitrary-precision integers
# opam file:
opam-version: "2.0"
maintainer: "matej.kosik@inria.fr"
homepage: "https://github.com/coq-contribs/higman-nw"
license: "LGPL 2"
build: [make "-j%{jobs}%"]
install: [make "install"]
remove: ["rm" "-R" "%{lib}%/coq/user-contrib/HigmanNW"]
depends: [
  "ocaml"
  "coq" {>= "8.5" & < "8.6~"}
]
tags: [
  "keyword:A-translation"
  "keyword:Higman's lemma"
  "keyword:impredicativity"
  "keyword:System F"
  "keyword:extraction"
  "category:Mathematics/Combinatorics and Graph Theory"
  "category:Miscellaneous/Extracted Programs/Combinatorics"
]
authors: [ "Hugo Herbelin <>" ]
bug-reports: "https://github.com/coq-contribs/higman-nw/issues"
dev-repo: "git+https://github.com/coq-contribs/higman-nw.git"
synopsis: "A program from an A-translated impredicative proof of Higman's Lemma"
description: """
The file Higman.v formalizes an A-translated version of
Nash-Williams impredicative and classical proof of Higman's lemma
for a two-letter alphabet.
A constructive and impredicative program can be extracted from the proof."""
flags: light-uninstall
url {
  src: "https://github.com/coq-contribs/higman-nw/archive/v8.5.0.tar.gz"
  checksum: "md5=9929b301e66933897c31c515a03a5c8f"
}

Lint

Command
true
Return code
0

Dry install ๐Ÿœ๏ธ

Dry install with the current Coq version:

Command
opam install -y --show-action coq-higman-nw.8.5.0 coq.dev
Return code
5120
Output
[NOTE] Package coq is already installed (current version is dev).
The following dependencies couldn't be met:
  - coq-higman-nw -> coq < 8.6~ -> ocaml < 4.06.0
      base of this switch (use `--unlock-base' to force)
Your request can't be satisfied:
  - No available version of coq satisfies the constraints
No solution found, exiting

Dry install without Coq/switch base, to test if the problem was incompatibility with the current Coq/OCaml version:

Command
opam remove -y coq; opam install -y --show-action --unlock-base coq-higman-nw.8.5.0
Return code
0

Install dependencies

Command
true
Return code
0
Duration
0 s

Install ๐Ÿš€

Command
true
Return code
0
Duration
0 s

Installation size

No files were installed.

Uninstall ๐Ÿงน

Command
true
Return code
0
Missing removes
none
Wrong removes
none