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compcert 3.5 Not compatible 👼

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       Formal proof management system
num                 0           The Num library for arbitrary-precision integer and rational arithmetic
ocaml               4.03.0      The OCaml compiler (virtual package)
ocaml-base-compiler 4.03.0      Official 4.03.0 release
ocaml-config        1           OCaml Switch Configuration
ocamlfind           1.9.6       A library manager for OCaml
# 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}%"]
]
install: [
  [make "install"]
  ["install" "-m" "0644" "VERSION" "%{lib}%/coq/user-contrib/compcert/"]
]
remove: [
  ["rm" "%{bin}%/ccomp"]
  ["rm" "%{bin}%/clightgen"]
  ["rm" "-R" "%{lib}%/compcert"]
  ["rm" "-R" "%{lib}%/coq/user-contrib/compcert"]
  ["rm" "%{share}%/compcert.ini"]
  ["rm" "%{share}%/man/man1/ccomp.1"]
  ["sh" "-c" "rmdir -p %{share}%/man/man1 || true"]
]
depends: [
  "ocaml" {< "4.08.0"}
  "coq"  {>= "8.9.0" & < "8.10"}
  "menhir" {>= "20180530" & <= "20181113"}
]
synopsis: "The CompCert C compiler"
url {
  src: "https://github.com/AbsInt/CompCert/archive/v3.5.tar.gz"
  checksum: "sha256=1ea01f9fe9dcfb664dec3b0076bd9ae0d54bb9d79279b5351ab12cc32369b509"
}

Lint

Command: true
Return code: 0

Dry install 🏜️

Dry install with the current Coq version:

Command

opam install -y --show-action coq-compcert.3.5 coq.8.7.1

Return code

5120

Output

[NOTE] Package coq is already installed (current version is 8.7.1).
The following dependencies couldn't be met:
  - coq-compcert -> coq >= 8.9.0 -> ocaml >= 4.05.0
      base of this switch (use `--unlock-base' to force)
  - coq-compcert -> coq >= 8.9.0 -> coq-core -> 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:

Command: opam remove -y coq; opam install -y --show-action --unlock-base coq-compcert.3.5
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