# Packages matching: installed
# Name # Installed # Synopsis
base-bigarray base
base-num base Num library distributed with the OCaml compiler
base-threads base
base-unix base
camlp5 7.14 Preprocessor-pretty-printer of OCaml
conf-findutils 1 Virtual package relying on findutils
conf-perl 2 Virtual package relying on perl
coq 8.9.0 Formal proof management system
num 0 The Num library for arbitrary-precision integer and rational arithmetic
ocaml 4.04.2 The OCaml compiler (virtual package)
ocaml-base-compiler 4.04.2 Official 4.04.2 release
ocaml-config 1 OCaml Switch Configuration
ocamlfind 1.9.6 A library manager for OCaml
# opam file:
opam-version: "2.0"
maintainer: "palmskog@gmail.com"
homepage: "https://github.com/coq-community/fourcolor"
dev-repo: "git+https://github.com/coq-community/fourcolor.git"
bug-reports: "https://github.com/coq-community/fourcolor/issues"
license: "CECILL-B"
synopsis: "Mechanization of the Four Color Theorem in Coq"
description: """
This library contains a formal proof of the Four Color Theorem in Coq,
along with the theories needed to support stating and then proving the Theorem.
This includes an axiomatization of the setoid of classical real numbers,
basic plane topology definitions, and a theory of combinatorial hypermaps."""
build: [make "-j%{jobs}%"]
install: [make "install"]
depends: [
"coq" {(>= "8.16" & < "8.19~") | (= "dev")}
"coq-mathcomp-ssreflect" {(>= "2.0.0" & < "2.2~") | (= "dev")}
"coq-mathcomp-algebra"
]
tags: [
"category:Mathematics/Combinatorics and Graph Theory"
"keyword:Four color theorem"
"keyword:small scale reflection"
"keyword:Mathematical Components"
"logpath:fourcolor"
"date:2023-10-26"
]
authors: [
"Georges Gonthier"
]
url {
src: "https://github.com/math-comp/fourcolor/archive/v1.3.1.tar.gz"
checksum: "sha512=ed3f0f70c356339ff0918a45deb32fa6d27f7c66ae224c3c7ff1c3bfd5688761e3aab9f77bb88d5a3ea32ef56a20519f133fd0e46e0f48342557b69c9cc6f3d6"
}
trueDry install with the current Coq version:
opam install -y --show-action coq-fourcolor.1.3.1 coq.8.9.0[NOTE] Package coq is already installed (current version is 8.9.0).
The following dependencies couldn't be met:
- coq-fourcolor -> coq >= dev -> ocaml >= 4.09.0
base of this switch (use `--unlock-base' to force)
- coq-fourcolor -> coq >= dev -> coq-core -> ocaml >= 4.09.0
base of this switch (use `--unlock-base' to force)
No solution found, exiting
Dry install without Coq/switch base, to test if the problem was incompatibility with the current Coq/OCaml version:
opam remove -y coq; opam install -y --show-action --unlock-base coq-fourcolor.1.3.1truetrueNo files were installed.
true