conf-clang 1

Error log

The package failed to build. The error log from opam follows.

Opam plugin "depext" may require upgrading/reinstalling. Reinstall the plugin on the current switch? [Y/n] y
The following actions will be performed:
  - recompile opam-depext 1.2.1-1

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved opam-depext.1.2.1-1  (cached)
-> removed   opam-depext.1.2.1-1
-> installed opam-depext.1.2.1-1
Done.

<><> opam-depext.1.2.1-1 installed successfully <><><><><><><><><><><><><><><><>
=> opam-depext is unnecessary when used with opam >= 2.1. Please use opam install directly instead
# Run eval $(opam env) to update the current shell environment

<><> Carrying on to "opam depext -viy frama-clang.0.0.14 zarith.1.13 yojson.2.1.0 yaml.3.1.0 why3.1.6.0 topkg.1.0.7 stdune.3.10.0 stdlib-shims.0.3.0 sexplib0.v0.16.0 seq.base rresult.0.7.0 result.1.5 re.1.11.0 psmt2-frontend.0.4.0 ppxlib.0.30.0 ppx_import.1.10.0 ppx_deriving_yojson.3.7.0 ppx_deriving_yaml.0.2.1 ppx_deriving.5.2.1 ppx_derivers.1.2.1 pp.1.1.2 pcre.7.5.0 ordering.3.10.0 ocplib-simplex.0.4.1 ocamlgraph.2.1.0 ocamlfind.1.9.6 ocamlbuild.0.14.2 ocaml-compiler-libs.v0.12.4 num.1.4 not-ocamlfind.0.10 menhirSdk.20230608 menhirLib.20230608 menhir.20230608 logs.0.7.0 lablgtk3-sourceview3.3.1.3 lablgtk3.3.1.3 integers.0.7.0 frama-c.27.1 fpath.0.7.3 fmt.0.9.0 dyn.3.10.0 dune-site.3.10.0 dune-private-libs.3.10.0 dune-configurator.3.10.0 dune-build-info.3.10.0 dune.3.10.0 ctypes.0.21.1 csexp.1.5.2 cppo.1.6.9 conf-zlib.1 conf-which.1 conf-pkg-config.3 conf-perl.2 conf-m4.1 conf-llvm.15 conf-libpcre.1 conf-libclang.15 conf-gtksourceview3.0+2 conf-gtk3.18 conf-gmp.4 conf-cmake.1 conf-clang.1 conf-cairo.1 conf-bash.1 conf-autoconf.0.1 cmdliner.1.2.0 camlzip.1.11 camlp5-buildscripts.0.03 camlp5.8.02.00 camlp-streams.5.0.1 cairo2.0.6.4 bos.0.2.1 bigarray-compat.1.1.0 astring.0.8.5 alt-ergo-parsers.2.4.3 alt-ergo-lib.2.4.3 alt-ergo.2.4.3" 

You are using opam 2.1+, where external dependency handling has been integrated: consider calling opam directly, the 'depext' plugin interface is provided for backwards compatibility only
# Detecting depexts using vars: arch=x86_64, os=linux, os-distribution=debian, os-family=debian
[ERROR] No solution for frama-clang.0.0.14 & zarith.1.13 & yojson.2.1.0 & yaml.3.1.0 & why3.1.6.0 & topkg.1.0.7 & stdune.3.10.0 & stdlib-shims.0.3.0 & sexplib0.v0.16.0 & seq.base & rresult.0.7.0 & result.1.5 & re.1.11.0 & psmt2-frontend.0.4.0 & ppxlib.0.30.0 & ppx_import.1.10.0 & ppx_deriving_yojson.3.7.0 & ppx_deriving_yaml.0.2.1 & ppx_deriving.5.2.1 & ppx_derivers.1.2.1 & pp.1.1.2 & pcre.7.5.0 & ordering.3.10.0 & ocplib-simplex.0.4.1 & ocamlgraph.2.1.0 & ocamlfind.1.9.6 & ocamlbuild.0.14.2 & ocaml-compiler-libs.v0.12.4 & num.1.4 & not-ocamlfind.0.10 & menhirSdk.20230608 & menhirLib.20230608 & menhir.20230608 & logs.0.7.0 & lablgtk3-sourceview3.3.1.3 & lablgtk3.3.1.3 & integers.0.7.0 & frama-c.27.1 & fpath.0.7.3 & fmt.0.9.0 & dyn.3.10.0 & dune-site.3.10.0 & dune-private-libs.3.10.0 & dune-configurator.3.10.0 & dune-build-info.3.10.0 & dune.3.10.0 & ctypes.0.21.1 & csexp.1.5.2 & cppo.1.6.9 & conf-zlib.1 & conf-which.1 & conf-pkg-config.3 & conf-perl.2 & conf-m4.1 & conf-llvm.15 & conf-libpcre.1 & conf-libclang.15 & conf-gtksourceview3.0+2 & conf-gtk3.18 & conf-gmp.4 & conf-cmake.1 & conf-clang.1 & conf-cairo.1 & conf-bash.1 & conf-autoconf.0.1 & cmdliner.1.2.0 & camlzip.1.11 & camlp5-buildscripts.0.03 & camlp5.8.02.00 & camlp-streams.5.0.1 & cairo2.0.6.4 & bos.0.2.1 & bigarray-compat.1.1.0 & astring.0.8.5 & alt-ergo-parsers.2.4.3 & alt-ergo-lib.2.4.3 & alt-ergo.2.4.3:   * Missing dependency:
            - conf-llvm >= 15
            depends on the unavailable system package 'llvm-15-dev'. Use `--no-depexts' to attempt installation anyway, or it is possible that a depext package name in the opam file is incorrect.


Command failed: opam --cli=2.1 list --readonly --external '--resolve=frama-clang.0.0.14,zarith.1.13,yojson.2.1.0,yaml.3.1.0,why3.1.6.0,topkg.1.0.7,stdune.3.10.0,stdlib-shims.0.3.0,sexplib0.v0.16.0,seq.base,rresult.0.7.0,result.1.5,re.1.11.0,psmt2-frontend.0.4.0,ppxlib.0.30.0,ppx_import.1.10.0,ppx_deriving_yojson.3.7.0,ppx_deriving_yaml.0.2.1,ppx_deriving.5.2.1,ppx_derivers.1.2.1,pp.1.1.2,pcre.7.5.0,ordering.3.10.0,ocplib-simplex.0.4.1,ocamlgraph.2.1.0,ocamlfind.1.9.6,ocamlbuild.0.14.2,ocaml-compiler-libs.v0.12.4,num.1.4,not-ocamlfind.0.10,menhirSdk.20230608,menhirLib.20230608,menhir.20230608,logs.0.7.0,lablgtk3-sourceview3.3.1.3,lablgtk3.3.1.3,integers.0.7.0,frama-c.27.1,fpath.0.7.3,fmt.0.9.0,dyn.3.10.0,dune-site.3.10.0,dune-private-libs.3.10.0,dune-configurator.3.10.0,dune-build-info.3.10.0,dune.3.10.0,ctypes.0.21.1,csexp.1.5.2,cppo.1.6.9,conf-zlib.1,conf-which.1,conf-pkg-config.3,conf-perl.2,conf-m4.1,conf-llvm.15,conf-libpcre.1,conf-libclang.15,conf-gtksourceview3.0+2,conf-gtk3.18,conf-gmp.4,conf-cmake.1,conf-clang.1,conf-cairo.1,conf-bash.1,conf-autoconf.0.1,cmdliner.1.2.0,camlzip.1.11,camlp5-buildscripts.0.03,camlp5.8.02.00,camlp-streams.5.0.1,cairo2.0.6.4,bos.0.2.1,bigarray-compat.1.1.0,astring.0.8.5,alt-ergo-parsers.2.4.3,alt-ergo-lib.2.4.3,alt-ergo.2.4.3' returned 20