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higman-nw dev Not compatible 👼

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-m4             1           Virtual package relying on m4
coq                 8.11.dev    Formal proof management system
num                 1.3         The legacy Num library for arbitrary-precision integer and rational arithmetic
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
ocamlfind           1.8.1       A library manager for OCaml
# opam file:
opam-version: "2.0"
maintainer: "dev@clarus.me"
homepage: "https://github.com/coq-contribs/higman-nw"
license: "LGPL 2"
build: [
  ["coq_makefile" "-f" "Make" "-o" "Makefile"]
  [make "-j%{jobs}%"]
]
install: [make "install"]
remove: ["rm" "-R" "%{lib}%/coq/user-contrib/HigmanNW"]
depends: [
  "ocaml"
  "coq" {= "dev"}
]
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 <>" ]
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: "git+https://github.com/coq-contribs/higman-nw.git#master"
}

Lint

Command: true
Return code: 0

Dry install 🏜️

Dry install with the current Coq version:

Command

opam install -y --show-action coq-higman-nw.dev coq.8.11.dev

Return code

5120

Output

[NOTE] Package coq is already installed (current version is 8.11.dev).
The following dependencies couldn't be met:
  - coq-higman-nw -> coq >= dev
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.dev
Return code: 0

Install dependencies

Command: true
Return code: 0
Duration: 0 s

Install 🚀

Command: true
Return code: 0
Duration: 0 s

Installation size

No files were installed.

Uninstall 🧹

Command: true
Return code: 0
Missing removes: none
Wrong removes: none