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markov 8.5.0 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
coq                 8.11.0      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           1.9.1       A library manager for OCaml
# opam file:
opam-version: "2.0"
maintainer: "matej.kosik@inria.fr"
homepage: "https://github.com/coq-contribs/markov"
license: "GNU Lesser Public License"
build: [make "-j%{jobs}%"]
install: [make "install"]
remove: ["rm" "-R" "%{lib}%/coq/user-contrib/Markov"]
depends: [
  "ocaml"
  "coq" {>= "8.5" & < "8.6~"}
]
tags: [
  "keyword:probability"
  "keyword:Markov"
  "keyword:Lebesgue integral"
  "keyword:sigma algebras"
  "keyword:measurability"
  "keyword:Borel"
  "category:Mathematics/Real Calculus and Topology"
  "date:2008-01-5"
]
authors: [ "Robert Kam <rkam2001@hotmail.com>" ]
bug-reports: "https://github.com/coq-contribs/markov/issues"
dev-repo: "git+https://github.com/coq-contribs/markov.git"
synopsis: "Markov's inequality"
description:
  "A proof of Markov's inequality, restricted to probability spaces, based on the Wikipedia proof. Defines Lebesgue integral and associated concepts such as measurability, measure functions, and sigma algebras. Extended real numbers did not need to be defined because we are working in a probability space with measure 1. Nonconstructive; uses classic, Extensionality_Ensembles, axiomatized real numbers from Coq standard library."
flags: light-uninstall
url {
  src: "https://github.com/coq-contribs/markov/archive/v8.5.0.tar.gz"
  checksum: "md5=a8d0ba351790d14b0a2c34ac45d8673f"
}

Lint

Command: true
Return code: 0

Dry install 🏜️

Dry install with the current Coq version:

Command

opam install -y --show-action coq-markov.8.5.0 coq.8.11.0

Return code

5120

Output

[NOTE] Package coq is already installed (current version is 8.11.0).
The following dependencies couldn't be met:
  - coq-markov -> coq < 8.6~ -> ocaml < 4.06.0
      base of this switch (use `--unlock-base' to force)
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-markov.8.5.0
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