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huffman 8.16.0 Not compatible 👼

Context

# Packages matching: installed
# Name                # Installed # Synopsis
base-bigarray         base
base-domains          base
base-nnp              base        Naked pointers prohibited in the OCaml heap
base-threads          base
base-unix             base
conf-gmp              4           Virtual package relying on a GMP lib system installation
coq                   dev         The Coq Proof Assistant
coq-core              dev         The Coq Proof Assistant -- Core Binaries and Tools
coq-stdlib            dev         The Coq Proof Assistant -- Standard Library
coqide-server         dev         The Coq Proof Assistant, XML protocol server
dune                  3.12.2      Fast, portable, and opinionated build system
ocaml                 5.0.0       The OCaml compiler (virtual package)
ocaml-base-compiler   5.0.0       Official release 5.0.0
ocaml-config          3           OCaml Switch Configuration
ocaml-options-vanilla 1           Ensure that OCaml is compiled with no special options enabled
ocamlfind             1.9.6       A library manager for OCaml
zarith                1.13        Implements arithmetic and logical operations over arbitrary-precision integers
# opam file:
opam-version: "2.0"
maintainer: "palmskog@gmail.com"
homepage: "https://github.com/coq-community/huffman"
dev-repo: "git+https://github.com/coq-community/huffman.git"
bug-reports: "https://github.com/coq-community/huffman/issues"
doc: "https://coq-community.org/huffman/"
license: "LGPL-2.1-or-later"
synopsis: "Coq proof of the correctness of the Huffman coding algorithm"
description: """
This projects contains a Coq proof of the correctness of the Huffman coding algorithm,
as described in David A. Huffman's paper A Method for the Construction of Minimum-Redundancy
Codes, Proc. IRE, pp. 1098-1101, September 1952."""
build: [make "-j%{jobs}%"]
install: [make "install"]
depends: [
  "coq" {>= "8.12" & < "8.20"}
]
tags: [
  "category:Computer Science/Decision Procedures and Certified Algorithms/Correctness proofs of algorithms"
  "category:Miscellaneous/Extracted Programs/Combinatorics"
  "keyword:data compression"
  "keyword:code"
  "keyword:huffman tree"
  "logpath:Huffman"
  "date:2023-07-09"
]
authors: [
  "Laurent Théry"
]
url {
  src: "https://github.com/coq-community/huffman/archive/v8.16.0.tar.gz"
  checksum: "sha512=943db124e9f08afb1681754004ee5438f652f99cb6006bc7a4d390ce904090ed6344feaa31120a2f40728281a073ae0d720504607b86ac369001c610f83b3e7d"
}

Lint

Command
true
Return code
0

Dry install 🏜️

Dry install with the current Coq version:

Command
opam install -y --show-action coq-huffman.8.16.0 coq.dev
Return code
5120
Output
[NOTE] Package coq is already installed (current version is dev).
[ERROR] Package conflict!
  * No agreement on the version of coq:
    - coq >= dev
    - coq-huffman = 8.16.0 -> coq < 8.20
  * No agreement on the version of ocaml:
    - (invariant) -> ocaml-base-compiler = 5.0.0 -> ocaml = 5.0.0
    - coq-huffman = 8.16.0 -> coq < 8.20 -> ocaml < 4.05.0
    You can temporarily relax the switch invariant with `--update-invariant'
  * No agreement on the version of ocaml-base-compiler:
    - (invariant) -> ocaml-base-compiler = 5.0.0
    - coq-huffman = 8.16.0 -> coq < 8.20 -> ocaml < 4.05.0 -> ocaml-base-compiler = 3.08.1
  * Incompatible packages:
    - (invariant) -> ocaml-base-compiler = 5.0.0 -> base-nnp
    - coq-huffman = 8.16.0 -> coq < 8.20
  * Missing dependency:
    - coq-huffman = 8.16.0 -> coq < 8.20 -> ocaml < 4.05.0 -> ocaml-variants -> ocaml-beta
    unmet availability conditions: 'enable-ocaml-beta-repository'
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.8.16.0
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