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io-hello-world 1.1.0 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                 4           Virtual package relying on a GMP lib system installation
coq                      8.15.2      Formal proof management system
dune                     3.4.1       Fast, portable, and opinionated build system
ocaml                    4.07.1      The OCaml compiler (virtual package)
ocaml-base-compiler      4.07.1      Official release 4.07.1
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: "dev@clarus.me"
homepage: "https://github.com/clarus/coq-hello-world"
dev-repo: "git+https://github.com/clarus/coq-hello-world.git"
bug-reports: "https://github.com/clarus/coq-hello-world/issues"
authors: ["Guillaume Claret"]
license: "MIT"
build: [
  ["./configure.sh"]
  [make "-j%{jobs}%"]
  [make "-C" "extraction"]
]
depends: [
  "ocaml"
  "coq" {>= "8.4pl4" & < "8.9"}
  "coq-io-system" {>= "2.3.0"}
]
tags: [
  "date:2015-06-14"
  "keyword:effects"
  "keyword:extraction"
]
synopsis: "A Hello World program in Coq"
extra-files: [
  "coq-io-hello-world.install" "md5=63d2dca2628eb17acf4b57b72d248663"
]
url {
  src: "https://github.com/coq-io/hello-world/archive/1.1.0.tar.gz"
  checksum: "md5=2d044c1840d7a661ceb8e8a432a50559"
}

Lint

Command: true
Return code: 0

Dry install 🏜️

Dry install with the current Coq version:

Command

opam install -y --show-action coq-io-hello-world.1.1.0 coq.8.15.2

Return code

5120

Output

[NOTE] Package coq is already installed (current version is 8.15.2).
The following dependencies couldn't be met:
  - coq-io-hello-world -> 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-io-hello-world.1.1.0
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