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coinduction 1.8 Not compatible 👼

Context

# Packages matching: installed
# Name              # Installed # Synopsis
base-bigarray       base
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                 8.7.0       Formal proof management system
num                 1.4         The legacy Num library for arbitrary-precision integer and rational arithmetic
ocaml               4.09.1      The OCaml compiler (virtual package)
ocaml-base-compiler 4.09.1      Official release 4.09.1
ocaml-config        1           OCaml Switch Configuration
ocamlfind           1.9.6       A library manager for OCaml
# opam file:
opam-version: "2.0"
maintainer: "damien.pous@ens-lyon.fr"
homepage: "https://github.com/damien-pous/coinduction"
dev-repo: "git+https://github.com/damien-pous/coinduction.git"
bug-reports: "https://github.com/damien-pous/coinduction/issues"
license: "LGPL-3.0-or-later"
synopsis: "A library for doing proofs by (enhanced) coinduction"
description: """
Coinductive predicates are greatest fixpoints of monotone functions.
The `companion' makes it possible to enhance the associated coinduction scheme.
This library provides a formalisation on enhancements based on the companion, as well as tactics in making it straightforward to perform proofs by enhanced coinduction.
"""
build: [
  [make "-j%{jobs}%" ]
]
install: [make "install"]
depends: [
  "coq" {>= "8.16.1" & < "8.19~"}
]
tags: [
  "keyword:coinduction"
  "keyword:up to techniques"
  "keyword:companion"
  "keyword:bisimilarity"
  "logpath:Coinduction"
  "date:2023-10-20"
]
authors: [
  "Damien Pous"
]
url {
  src: "https://github.com/damien-pous/coinduction/archive/refs/tags/v1.8.tar.gz"
  checksum: "sha512=13510afe8db72f43790edaa14c3ce1aa55137c03e4494b6ac1f2e19dea0a24d19ec4493afc2ad7754da5421c0ee4eb60de813d3a341c418805fcf6c0e2fb7084"
}

Lint

Command: true
Return code: 0

Dry install 🏜️

Dry install with the current Coq version:

Command

opam install -y --show-action coq-coinduction.1.8 coq.8.7.0

Return code

5120

Output

[NOTE] Package coq is already installed (current version is 8.7.0).
The following dependencies couldn't be met:
  - coq-coinduction -> coq >= 8.16.1
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-coinduction.1.8
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