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gaia-hydras 0.9 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                 8.12.0      Formal proof management system
num                 1.4         The legacy Num library for arbitrary-precision integer and rational arithmetic
ocaml               4.06.1      The OCaml compiler (virtual package)
ocaml-base-compiler 4.06.1      Official 4.06.1 release
ocaml-config        1           OCaml Switch Configuration
ocamlfind           1.9.5       A library manager for OCaml
# opam file:
opam-version: "2.0"
maintainer: "palmskog@gmail.com"
homepage: "https://github.com/coq-community/hydra-battles"
dev-repo: "git+https://github.com/coq-community/hydra-battles.git"
bug-reports: "https://github.com/coq-community/hydra-battles/issues"
license: "MIT"
synopsis: "Bridge in Coq between Gaia and Hydra battles"
description: """
The Gaia and Hydra battles projects develop different implementations
of ordinals and other mathematical concepts in Coq. This development bridges
similar concepts in the two projects."""
build: ["dune" "build" "-p" name "-j" jobs]
depends: [
  "dune" {>= "2.5"}
  "coq" {>= "8.14" & < "8.16~"}
  "coq-hydra-battles" {= version}
  "coq-mathcomp-ssreflect" {>= "1.12.0" & < "1.15~"}
  "coq-mathcomp-zify"
  "coq-gaia-schutte" {>= "1.14" & < "1.15~"}
]
tags: [
  "category:Mathematics/Logic/Foundations"
  "keyword:ordinals"
  "logpath:gaia_hydras"
  "date:2022-05-20"
]
authors: [
  "Pierre Castéran"
]
url {
  src: "https://github.com/coq-community/hydra-battles/archive/v0.9.tar.gz"
  checksum: "sha512=d793c993b50dd1149475ed7131ddb7910a30b6711c97f3ae8079661e2e8f4211ce8b4d85ade9e57c176b05feb20edb59d286db883a5873e3c775aac0fb1e40c5"
}

Lint

Command: true
Return code: 0

Dry install 🏜️

Dry install with the current Coq version:

Command

opam install -y --show-action coq-gaia-hydras.0.9 coq.8.12.0

Return code

5120

Output

[NOTE] Package coq is already installed (current version is 8.12.0).
The following dependencies couldn't be met:
  - coq-gaia-hydras -> coq >= 8.14 -> 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-gaia-hydras.0.9
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