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huffman 8.6.0 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-gmp              4           Virtual package relying on a GMP lib system installation
coq                   8.14.0      Formal proof management system
dune                  3.6.2       Fast, portable, and opinionated build system
ocaml                 4.12.1      The OCaml compiler (virtual package)
ocaml-base-compiler   4.12.1      Official release 4.12.1
ocaml-config          2           OCaml Switch Configuration
ocaml-options-vanilla 1           Ensure that OCaml is compiled with no special options enabled
ocamlfind             1.9.5       A library manager for OCaml
zarith                1.12        Implements arithmetic and logical operations over arbitrary-precision integers
# opam file:
opam-version: "2.0"
maintainer: "Hugo.Herbelin@inria.fr"
homepage: "https://github.com/coq-contribs/huffman"
license: "LGPL 2.1"
build: [make "-j%{jobs}%"]
install: [make "install"]
remove: ["rm" "-R" "%{lib}%/coq/user-contrib/Huffman"]
depends: [
  "ocaml"
  "coq" {>= "8.6" & < "8.7~"}
]
tags: [ "keyword: Data Compression" "keyword: Code" "keyword: Huffman Tree" "category: Computer Science/Decision Procedures and Certified Algorithms/Correctness proofs of algorithms" "category: Miscellaneous/Extracted Programs/Combinatorics" "date: 2003-10" ]
authors: [ "Laurent Théry" ]
bug-reports: "https://github.com/coq-contribs/huffman/issues"
dev-repo: "git+https://github.com/coq-contribs/huffman.git"
synopsis: "A correctness proof of Huffman algorithm"
description: """
This directory contains the proof of correctness of Huffman algorithm
as described in:
David A. Huffman,
   "A Method for the Construction of Minimum-Redundancy Codes,"
    Proc. IRE, pp. 1098-1101, September 1952."""
flags: light-uninstall
url {
  src: "https://github.com/coq-contribs/huffman/archive/v8.6.0.tar.gz"
  checksum: "md5=9aff88559a90157172e491a4d1f867b4"
}

Lint

Command
true
Return code
0

Dry install 🏜️

Dry install with the current Coq version:

Command
opam install -y --show-action coq-huffman.8.6.0 coq.8.14.0
Return code
5120
Output
[NOTE] Package coq is already installed (current version is 8.14.0).
The following dependencies couldn't be met:
  - coq-huffman -> coq < 8.7~ -> ocaml < 4.06.0
      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:

Command
opam remove -y coq; opam install -y --show-action --unlock-base coq-huffman.8.6.0
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