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paramcoq 1.1.2+coq8.8 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                 8.12.1      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           1.9.3       A library manager for OCaml
# opam file:
opam-version: "2.0"
maintainer: "Pierre Roux <pierre.roux@onera.fr>"
homepage: "https://github.com/coq-community/paramcoq"
dev-repo: "git+https://github.com/coq-community/paramcoq.git"
bug-reports: "https://github.com/coq-community/paramcoq/issues"
license: "MIT"
build: [make "-j%{jobs}%"]
install: [make "install"]
depends: [
  "coq" {>= "8.8" & < "8.9~"}
]
tags: [
  "keyword:paramcoq"
  "keyword:parametricity"
  "keyword:OCaml modules"
  "category:Miscellaneous/Coq Extensions"
  "logpath:Param"
]
authors: [
  "Chantal Keller (Inria, École polytechnique)"
  "Marc Lasson (ÉNS de Lyon)"
  "Abhishek Anand"
  "Pierre Roux"
  "Emilio Jesús Gallego Arias"
  "Cyril Cohen"
  "Matthieu Sozeau"
]
synopsis: "Plugin for generating parametricity statements to perform refinement proofs"
description: """
The plugin is still in an experimental state. It is not very user
friendly (lack of good error messages) and still contains bugs. But is
useable enough to "translate" a large chunk of standard library."""
url {
  src: "https://github.com/coq-community/paramcoq/archive/v1.1.2+coq8.8.tar.gz"
  checksum: "sha256=fc5815f7ff04adf188ba7dbdd2e70ec46395e3c544fd1355a79d10ceb447b7d0"
}

Lint

Command: true
Return code: 0

Dry install 🏜️

Dry install with the current Coq version:

Command

opam install -y --show-action coq-paramcoq.1.1.2+coq8.8 coq.8.12.1

Return code

5120

Output

[NOTE] Package coq is already installed (current version is 8.12.1).
The following dependencies couldn't be met:
  - coq-paramcoq -> coq < 8.9~ -> ocaml < 4.06.0
      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-paramcoq.1.1.2+coq8.8
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