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nfix 8.8.0 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
conf-gmp                 3           Virtual package relying on a GMP lib system installation
coq                      dev         Formal proof management system
dune                     2.9.1       Fast, portable, and opinionated build system
ocaml                    4.05.0      The OCaml compiler (virtual package)
ocaml-base-compiler      4.05.0      Official 4.05.0 release
ocaml-config             1           OCaml Switch Configuration
ocaml-secondary-compiler 4.08.1-1    OCaml 4.08.1 Secondary Switch Compiler
ocamlfind                1.9.1       A library manager for OCaml
ocamlfind-secondary      1.9.1       Adds support for ocaml-secondary-compiler to ocamlfind
zarith                   1.12        Implements arithmetic and logical operations over arbitrary-precision integers
# opam file:
opam-version: "2.0"
maintainer: "Hugo.Herbelin@inria.fr"
homepage: "https://github.com/coq-contribs/nfix"
license: "Unknown"
build: [make "-j%{jobs}%"]
install: [make "install"]
remove: ["rm" "-R" "%{lib}%/coq/user-contrib/Nfix"]
depends: [
  "ocaml"
  "coq" {>= "8.8" & < "8.9~"}
]
tags: [ "keyword: mutual fixpoint functions" "category: Miscellaneous/Coq Extensions" ]
authors: [ "Stéphane Lescuyer" ]
bug-reports: "https://github.com/coq-contribs/nfix/issues"
dev-repo: "git+https://github.com/coq-contribs/nfix.git"
synopsis: "Nfix: a Coq extension for fixpoints on nested inductives"
description:
  "This plugin provides a syntactic extension that allows one to write mutual fixpoints over nested inductives."
flags: light-uninstall
url {
  src: "https://github.com/coq-contribs/nfix/archive/v8.8.0.tar.gz"
  checksum: "md5=c06d488d04c34946bb90d5abbf8a2387"
}

Lint

Command: true
Return code: 0

Dry install 🏜️

Dry install with the current Coq version:

Command

opam install -y --show-action coq-nfix.8.8.0 coq.dev

Return code

5120

Output

[NOTE] Package coq is already installed (current version is dev).
The following dependencies couldn't be met:
  - coq-nfix -> coq < 8.9~ -> ocaml < 4.05.0
      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-nfix.8.8.0
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