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            <h1>
              tree-calculus
              <small>
                1.0.0
                <span class="label label-info">Not compatible 👼</span>
              </small>
            </h1>
            <p>📅 <em><script>document.write(moment("2021-12-26 20:28:19 +0000", "YYYY-MM-DD HH:mm:ss Z").fromNow());</script> (2021-12-26 20:28:19 UTC)</em><p>
            <h2>Context</h2>
            <pre># 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           1           Virtual package relying on perl
coq                 8.7.0       Formal proof management system
num                 1.4         The legacy Num library for arbitrary-precision integer and rational arithmetic
ocaml               4.08.1      The OCaml compiler (virtual package)
ocaml-base-compiler 4.08.1      Official release 4.08.1
ocaml-config        1           OCaml Switch Configuration
ocamlfind           1.9.1       A library manager for OCaml
# opam file:
opam-version: &quot;2.0&quot;
synopsis: &quot;A Coq library for tree calculus&quot; # One-line description
description: &quot;&quot;&quot;
 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.  
&quot;&quot;&quot; # Longer description, can span several lines
homepage: &quot;https://github.com/barry-jay-personal/tree-calculus&quot;
dev-repo: &quot;git+https://github.com/barry-jay-personal/tree-calculus.git&quot;
bug-reports: &quot;https://github.com/barry-jay-personal/tree-calculus/issues&quot;
doc: &quot;https://barry-jay-personal.github.io/tree-calculus&quot;
maintainer: &quot;barry.jay8@gmail.com&quot;
authors: [
  &quot;Barry Jay&quot;
]
license: &quot;MIT&quot; # Make sure this is reflected by a LICENSE file in your sources
depends: [
  &quot;coq&quot; {&gt;= &quot;8.12&quot;}
]
build: [
  [make &quot;-j%{jobs}%&quot;]
]
install: [
  [make &quot;install&quot;]
]
url {
  src: &quot;https://github.com/barry-jay-personal/tree-calculus/archive/1.0.0.tar.gz&quot;
  checksum: &quot;sha256=eb5b8bbc81e27c783334ff9d17d910495aa14b4c46b9a3465a85712b163ac33f&quot;
}
tags: [
  &quot;keyword:tree calculus&quot;
  &quot;keyword:reflective programs&quot;
  &quot;category:Computer Science/Lambda Calculi&quot;	
  &quot;date:2020-09-20&quot;
  &quot;logpath:Reflective&quot;
]</pre>
            <h2>Lint</h2>
            <dl class="dl-horizontal">
              <dt>Command</dt>
              <dd><code>true</code></dd>
              <dt>Return code</dt>
              <dd>0</dd>
            </dl>
            <h2>Dry install 🏜️</h2>
            <p>Dry install with the current Coq version:</p>
            <dl class="dl-horizontal">
              <dt>Command</dt>
              <dd><code>opam install -y --show-action coq-tree-calculus.1.0.0 coq.8.7.0</code></dd>
              <dt>Return code</dt>
              <dd>5120</dd>
              <dt>Output</dt>
              <dd><pre>[NOTE] Package coq is already installed (current version is 8.7.0).
The following dependencies couldn&#39;t be met:
  - coq-tree-calculus -&gt; coq &gt;= 8.12
Your request can&#39;t be satisfied:
  - No available version of coq satisfies the constraints
No solution found, exiting
</pre></dd>
            </dl>
            <p>Dry install without Coq/switch base, to test if the problem was incompatibility with the current Coq/OCaml version:</p>
            <dl class="dl-horizontal">
              <dt>Command</dt>
              <dd><code>opam remove -y coq; opam install -y --show-action --unlock-base coq-tree-calculus.1.0.0</code></dd>
              <dt>Return code</dt>
              <dd>0</dd>
            </dl>
            <h2>Install dependencies</h2>
            <dl class="dl-horizontal">
              <dt>Command</dt>
              <dd><code>true</code></dd>
              <dt>Return code</dt>
              <dd>0</dd>
              <dt>Duration</dt>
              <dd>0 s</dd>
            </dl>
            <h2>Install 🚀</h2>
            <dl class="dl-horizontal">
              <dt>Command</dt>
              <dd><code>true</code></dd>
              <dt>Return code</dt>
              <dd>0</dd>
              <dt>Duration</dt>
              <dd>0 s</dd>
            </dl>
            <h2>Installation size</h2>
            <p>No files were installed.</p>
            <h2>Uninstall 🧹</h2>
            <dl class="dl-horizontal">
              <dt>Command</dt>
              <dd><code>true</code></dd>
              <dt>Return code</dt>
              <dd>0</dd>
              <dt>Missing removes</dt>
              <dd>
                none
              </dd>
              <dt>Wrong removes</dt>
              <dd>
                none
              </dd>
            </dl>
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