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actuary 2.2 Not compatible 👼

Context

# Packages matching: installed
# Name              # Installed # Synopsis
base-bigarray       base
base-threads        base
base-unix           base
camlp5              7.14        Preprocessor-pretty-printer of OCaml
conf-findutils      1           Virtual package relying on findutils
conf-perl           2           Virtual package relying on perl
coq                 8.9.1       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           1.9.3       A library manager for OCaml
# opam file:
opam-version: "2.0"
maintainer: "palmskog@gmail.com"
homepage: "https://github.com/Yosuke-Ito-345/Actuary"
dev-repo: "git+https://github.com/Yosuke-Ito-345/Actuary.git"
bug-reports: "https://github.com/Yosuke-Ito-345/Actuary/issues"
license: "MIT"
synopsis: "Formalization of actuarial mathematics in Coq"
description: """
This package formalizes basic actuarial mathematics using Coq and
the Mathematical Components and Coquelicot libraries. This includes
the theory of interest, life tables, annuities, and reserves."""
build: [make "-j%{jobs}%"]
install: [make "install"]
depends: [
  "coq" {>= "8.12"}
  "coq-mathcomp-ssreflect" {>= "1.12"}
  "coq-coquelicot" {>= "3.1.0"}
]
tags: [  
  "category:Mathematics/Real Calculus and Topology"
  "keyword:present value"
  "keyword:life tables"
  "keyword:annuities"
  "keyword:reserves"
  "keyword:actuarial mathematics"
  "logpath:Actuary"
  "date:2021-12-18"
]
authors: [
  "Yosuke Ito"
]
url {
  src: "https://github.com/Yosuke-Ito-345/Actuary/archive/v2.2.tar.gz"
  checksum: "sha512=0805c63fa2eac6782716ff0f63fb59e125e24dff1ed6a8356d4020d5325b3e579ba5de548f7a1cec5832dd46d1e2892a43d841ee1f1e8f2affde305db498d1fc"
}

Lint

Command: true
Return code: 0

Dry install 🏜️

Dry install with the current Coq version:

Command

opam install -y --show-action coq-actuary.2.2 coq.8.9.1

Return code

5120

Output

[NOTE] Package coq is already installed (current version is 8.9.1).
The following dependencies couldn't be met:
  - coq-actuary -> coq >= 8.12
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-actuary.2.2
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