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addition-chains 0.6 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
coq                 8.12.2      Formal proof management system
num                 1.4         The legacy Num library for arbitrary-precision integer and rational arithmetic
ocaml               4.08.1      The OCaml compiler (virtual package)
ocaml-base-compiler 4.08.1      Official release 4.08.1
ocaml-config        1           OCaml Switch Configuration
ocamlfind           1.9.5       A library manager for OCaml
# opam file:
opam-version: "2.0"
maintainer: "palmskog@gmail.com"
homepage: "https://github.com/coq-community/hydra-battles"
dev-repo: "git+https://github.com/coq-community/hydra-battles.git"
bug-reports: "https://github.com/coq-community/hydra-battles/issues"
license: "MIT"
synopsis: "Exponentiation algorithms following addition chains in Coq"
description: """
Addition chains are algorithms for computations of the p-th power of some x, 
with the least number of multiplications possible. This development provides
a few implementations of addition chains in Coq, including proofs of their
correctness."""
build: ["dune" "build" "-p" name "-j" jobs]
depends: [
  "dune" {>= "2.5"}
  "coq" {>= "8.13" & < "8.16~"}
  "coq-paramcoq" {>= "1.1.3"}
  "coq-mathcomp-ssreflect" {>= "1.12.0" & < "1.15~"}
  "coq-mathcomp-algebra"
]
tags: [
  "category:Mathematics/Combinatorics and Graph Theory"
  "keyword:addition chains"
  "keyword:exponentiation algorithms"
  "logpath:additions"
  "date:2022-02-17"
]
authors: [
  "Pierre Castéran"
  "Yves Bertot"
]
url {
  src: "https://github.com/coq-community/hydra-battles/archive/v0.6.tar.gz"
  checksum: "sha512=a7e5e16506ad4eb2b5968d6bffbc1dacb297a304c7e8bbbd2ec4d2488d2090573288bdcd0e17fa05b605925b71c3ece5e46e91134d98f47248ef173c92dc8ed7"
}

Lint

Command: true
Return code: 0

Dry install 🏜️

Dry install with the current Coq version:

Command

opam install -y --show-action coq-addition-chains.0.6 coq.8.12.2

Return code

5120

Output

[NOTE] Package coq is already installed (current version is 8.12.2).
The following dependencies couldn't be met:
  - coq-addition-chains -> coq >= 8.13
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-addition-chains.0.6
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