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fssec-model 8.9.0 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                      8.15.0      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: "Hugo.Herbelin@inria.fr"
homepage: "https://github.com/coq-contribs/fssec-model"
license: "Unknown"
build: [make "-j%{jobs}%"]
install: [make "install"]
remove: ["rm" "-R" "%{lib}%/coq/user-contrib/FSSecModel"]
depends: [
  "ocaml"
  "coq" {>= "8.9" & < "8.10~"}
]
tags: [
  "keyword: security"
  "keyword: filesystem"
  "keyword: UNIX"
  "keyword: MLS"
  "keyword: access control"
  "category: Computer Science/Operating Systems"
  "date: 2002-04-24"
]
authors: [
  "Maximiliano Cristiá"
]
bug-reports: "https://github.com/coq-contribs/fssec-model/issues"
dev-repo: "git+https://github.com/coq-contribs/fssec-model.git"
synopsis: "Formal verification of an extension of a UNIX compatible, secure filesystem"
flags: light-uninstall
url {
  src: "https://github.com/coq-contribs/fssec-model/archive/v8.9.0.tar.gz"
  checksum: "md5=5b9be7b4470b4fb2a714755dc7b224aa"
}

Lint

Command: true
Return code: 0

Dry install 🏜️

Dry install with the current Coq version:

Command

opam install -y --show-action coq-fssec-model.8.9.0 coq.8.15.0

Return code

5120

Output

[NOTE] Package coq is already installed (current version is 8.15.0).
The following dependencies couldn't be met:
  - coq-fssec-model -> coq < 8.10~ -> 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-fssec-model.8.9.0
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