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compcert 3.6 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
conf-gmp            4           Virtual package relying on a GMP lib system installation
coq                 8.13.0      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           1.9.5       A library manager for OCaml
zarith              1.12        Implements arithmetic and logical operations over arbitrary-precision integers
# opam file:
opam-version: "2.0"
authors: "Xavier Leroy <xavier.leroy@inria.fr>"
maintainer: "Jacques-Henri Jourdan <jacques-Henri.jourdan@normalesup.org>"
homepage: "http://compcert.inria.fr/"
dev-repo: "git+https://github.com/AbsInt/CompCert.git"
bug-reports: "https://github.com/AbsInt/CompCert/issues"
license: "INRIA Non-Commercial License Agreement"
build: [
  ["./configure" "ia32-linux" {os = "linux"}
  "ia32-macosx" {os = "macos"}
  "ia32-cygwin" {os = "cygwin"}
  "-bindir" "%{bin}%"
  "-libdir" "%{lib}%/compcert"
  "-install-coqdev"
  "-clightgen"
  "-coqdevdir" "%{lib}%/coq/user-contrib/compcert"
  "-ignore-coq-version"]
  [make "-j%{jobs}%" {ocaml:version >= "4.06"}]
]
install: [
  [make "install"]
  ["install" "-m" "0644" "VERSION" "%{lib}%/coq/user-contrib/compcert/"]
]
depends: [
  "coq" {>= "8.7.0" & < "8.11"}
  "menhir" {>= "20190626" & < "20200123"}
  "ocaml" {>= "4.05.0"}
]
synopsis: "The CompCert C compiler"
tags: [
  "category:Computer Science/Semantics and Compilation/Compilation"
  "category:Computer Science/Semantics and Compilation/Semantics"
  "keyword:C"
  "keyword:compiler"
  "logpath:compcert"
  "date:2019-09-17"
]
url {
  src: "https://github.com/AbsInt/CompCert/archive/v3.6.tar.gz"
  checksum: "sha256=7a77839f6b990ab632ba14feccf4f17da189f0e3b95d6ce2ef0986e4caebc575"
}

Lint

Command: true
Return code: 0

Dry install 🏜️

Dry install with the current Coq version:

Command

opam install -y --show-action coq-compcert.3.6 coq.8.13.0

Return code

5120

Output

[NOTE] Package coq is already installed (current version is 8.13.0).
The following dependencies couldn't be met:
  - coq-compcert -> coq < 8.11 -> ocaml < 4.06.0
      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:

Command: opam remove -y coq; opam install -y --show-action --unlock-base coq-compcert.3.6
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