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tree-calculus 1.0.0 Not compatible ๐Ÿ‘ผ

Context

# Packages matching: installed
# Name              # Installed # Synopsis
base-bigarray       base
base-num            base        Num library distributed with the OCaml compiler
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                 8.7.1+2     Formal proof management system
num                 0           The Num library for arbitrary-precision integer and rational arithmetic
ocaml               4.04.2      The OCaml compiler (virtual package)
ocaml-base-compiler 4.04.2      Official 4.04.2 release
ocaml-config        1           OCaml Switch Configuration
ocamlfind           1.9.6       A library manager for OCaml
# opam file:
opam-version: "2.0"
synopsis: "A Coq library for tree calculus" # One-line description
description: """
 This library accompanies the book *Reflective Programs in Tree Calculus*. 
In tree calculus, computations are given by natural trees, i.e. finitely-branching trees without labels.
The functions, data structures, programs, inputs, outputs and values are all given by binary trees. 
The trees are built as combinations of a single operator. It has three evaluation rules, for leaves stems and forks. 
This is enough to support reflective programs such as a size function that can decide its own size, 
an equality program that can decide its own equality, and self-evaluators than can evaluate themselves. 
Since this does not require any meta-theory for, say, substitution, quotation, serialisation or Goedel numbers, 
it is simpler and more powerful than traditional models of computation.  
The organisation of the proofs is shown in the _CoqProject file, with one or two files per chapter.  
""" # Longer description, can span several lines
homepage: "https://github.com/barry-jay-personal/tree-calculus"
dev-repo: "git+https://github.com/barry-jay-personal/tree-calculus.git"
bug-reports: "https://github.com/barry-jay-personal/tree-calculus/issues"
doc: "https://barry-jay-personal.github.io/tree-calculus"
maintainer: "barry.jay8@gmail.com"
authors: [
  "Barry Jay"
]
license: "MIT" # Make sure this is reflected by a LICENSE file in your sources
depends: [
  "coq" {>= "8.12"}
]
build: [
  [make "-j%{jobs}%"]
]
install: [
  [make "install"]
]
url {
  src: "https://github.com/barry-jay-personal/tree-calculus/archive/1.0.0.tar.gz"
  checksum: "sha256=eb5b8bbc81e27c783334ff9d17d910495aa14b4c46b9a3465a85712b163ac33f"
}
tags: [
  "keyword:tree calculus"
  "keyword:reflective programs"
  "category:Computer Science/Lambda Calculi"	
  "date:2020-09-20"
  "logpath:Reflective"
]

Lint

Command
true
Return code
0

Dry install ๐Ÿœ๏ธ

Dry install with the current Coq version:

Command
opam install -y --show-action coq-tree-calculus.1.0.0 coq.8.7.1+2
Return code
5120
Output
[NOTE] Package coq is already installed (current version is 8.7.1+2).
The following dependencies couldn't be met:
  - coq-tree-calculus -> coq >= 8.12 -> ocaml >= 4.05.0
      base of this switch (use `--unlock-base' to force)
  - coq-tree-calculus -> coq >= 8.12 -> coq-core -> ocaml >= 4.09.0
      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-tree-calculus.1.0.0
Return code
0

Install dependencies

Command
true
Return code
0
Duration
0 s

Install ๐Ÿš€

Command
true
Return code
0
Duration
0 s

Installation size

No files were installed.

Uninstall ๐Ÿงน

Command
true
Return code
0
Missing removes
none
Wrong removes
none