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haskell 1.0.0 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                 8.9.1       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: "johnw@newartisans.com"
homepage: "https://github.com/jwiegley/coq-haskell"
dev-repo: "git+https://github.com/jwiegley/coq-haskell.git"
bug-reports: "https://github.com/jwiegley/coq-haskell/issues"
license: "BSD-3-Clause"
synopsis: "A library to provide Haskell-familiar constructions in Coq"
description: """
This library is designed for Haskell users who are either using Coq to build
code intended for extraction to Haskell, or who wish to prototype/prove their
algorithms in Coq. It provides a collection of definitions and notations to
make Gallina more familiar to Haskellers.
"""
build: [make]
install: [make "install"]
depends: [
  "coq" {(>= "8.10" & < "8.16~") | (= "dev")}
]
url {
  src: "https://github.com/jwiegley/coq-haskell/archive/refs/tags/1.0.tar.gz"
  checksum: "sha256=64b6958f4eca641b933977a047272dea00ef5ceff33206da66f10fe792dbf3f2"
}
authors: [
  "John Wiegley"
]
tags: [
  "keyword:haskell"
  "category:Computer Science/Data Types and Data Structures"
  "date:2022-03-29"
  "logpath:Hask"
]

Lint

Command: true
Return code: 0

Dry install 🏜️

Dry install with the current Coq version:

Command

opam install -y --show-action coq-haskell.1.0.0 coq.8.9.1

Return code

5120

Output

[NOTE] Package coq is already installed (current version is 8.9.1).
The following dependencies couldn't be met:
  - coq-haskell -> coq >= dev -> ocaml >= 4.09.0
      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-haskell.1.0.0
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