# Packages matching: installed
# Name # Installed # Synopsis
base-bigarray base
base-threads base
base-unix base
conf-findutils 1 Virtual package relying on findutils
coq 8.12.0 Formal proof management system
num 1.4 The legacy Num library for arbitrary-precision integer and rational arithmetic
ocaml 4.06.1 The OCaml compiler (virtual package)
ocaml-base-compiler 4.06.1 Official 4.06.1 release
ocaml-config 1 OCaml Switch Configuration
ocamlfind 1.9.5 A library manager for OCaml
# opam file:
opam-version: "2.0"
maintainer: "fcsl@software.imdea.org"
homepage: "https://github.com/imdea-software/htt"
dev-repo: "git+https://github.com/imdea-software/htt.git"
bug-reports: "https://github.com/imdea-software/htt/issues"
license: "Apache-2.0"
build: [make "-j%{jobs}%"]
install: [make "install"]
depends: [
"coq" { (>= "8.14" & < "8.16~") | (= "dev") }
"coq-mathcomp-ssreflect" { (>= "1.13.0" & < "1.15~") | (= "dev") }
"coq-fcsl-pcm" { (>= "1.5.0" & < "1.6~") | (= "dev") }
]
tags: [
"category:Computer Science/Data Types and Data Structures"
"keyword:partial commutative monoids"
"keyword:separation logic"
"logpath:HTT"
]
authors: [
"Aleksandar Nanevski"
"Germán Andrés Delbianco"
"Alexander Gryzlov"
]
synopsis: "Hoare Type Theory"
description: """
Hoare Type Theory (HTT) is a verification system for reasoning about sequential heap-manipulating
programs based on separation logic.
HTT incorporates Hoare-style specifications via preconditions and postconditions into types.
A Hoare type `ST P (fun x : A => Q)` denotes computations with a precondition `P` and
postcondition `Q`, returning a value `x` of type `A`. Hoare types are a dependently typed version
of monads, as used in the programming language Haskell. Monads hygienically combine the language
features for pure functional programming, with those for imperative programming, such as state
or exceptions. In this sense, HTT establishes a formal connection between (functional programming
variant of) Separation logic and monads, in the style of Curry-Howard isomorphism. Every
effectful command in HTT has a type which corresponds to the appropriate non-structural inference
rule in Separation logic, and vice versa, every non-structural inference rule corresponds to a
command in HTT that has that rule as the type. The type for monadic bind is the Hoare-style rule
for sequential composition, and the type for monadic unit combines the Hoare-style rule for the
idle program and the Hoare-style rule for variable assignment (adapted for functional variables).
In implementation terms, the above means that HTT implements Separation logic as a shallow
embedding in Coq."""
url {
src: "https://github.com/imdea-software/htt/archive/v1.0.0.tar.gz"
checksum: "sha256=8e34a0b31e9fb70699dd9de96738a3647b38d00c7c407095128c121121138b64"
}
trueDry install with the current Coq version:
opam install -y --show-action coq-htt.1.0.0 coq.8.12.0[NOTE] Package coq is already installed (current version is 8.12.0).
The following dependencies couldn't be met:
- coq-htt -> coq >= dev -> ocaml >= 4.09.0
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:
opam remove -y coq; opam install -y --show-action --unlock-base coq-htt.1.0.0truetrueNo files were installed.
true