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square-matrices 8.5.0 Not compatible 👼

Context

# 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                 8.7.1+1     Formal proof management system
num                 0           The Num library for arbitrary-precision integer and rational arithmetic
ocaml               4.03.0      The OCaml compiler (virtual package)
ocaml-base-compiler 4.03.0      Official 4.03.0 release
ocaml-config        1           OCaml Switch Configuration
ocamlfind           1.9.6       A library manager for OCaml
# opam file:
opam-version: "2.0"
maintainer: "matej.kosik@inria.fr"
homepage: "https://github.com/coq-contribs/square-matrices"
license: "LGPL 2"
build: [make "-j%{jobs}%"]
install: [make "install"]
remove: ["rm" "-R" "%{lib}%/coq/user-contrib/SquareMatrices"]
depends: [
  "ocaml"
  "coq" {>= "8.5" & < "8.6~"}
]
tags: [ "keyword:exponentiation" "keyword:vectors" "keyword:matrices" "keyword:polymorphic recursion" "keyword:nested datatypes" "category:Mathematics/Algebra" ]
authors: [ "Jean-Christophe Filliâtre <>" ]
bug-reports: "https://github.com/coq-contribs/square-matrices/issues"
dev-repo: "git+https://github.com/coq-contribs/square-matrices.git"
synopsis: "From Fast Exponentiation to Square Matrices"
description: """
This development is a formalization of Chris Okasaki's article
``From Fast Exponentiation to Square Matrices: An Adventure in Types''"""
flags: light-uninstall
url {
  src:
    "https://github.com/coq-contribs/square-matrices/archive/v8.5.0.tar.gz"
  checksum: "md5=c5ee897ece6be38f5f5f53cab72c50f1"
}

Lint

Command: true
Return code: 0

Dry install 🏜️

Dry install with the current Coq version:

Command

opam install -y --show-action coq-square-matrices.8.5.0 coq.8.7.1+1

Return code

5120

Output

[NOTE] Package coq is already installed (current version is 8.7.1+1).
The following dependencies couldn't be met:
  - coq-square-matrices -> coq < 8.6~ -> ocaml < 4.03.0
      base of this switch (use `--unlock-base' to force)
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-square-matrices.8.5.0
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