nixpkgs/pkgs/development/ocaml-modules/camlpdf/default.nix

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{ stdenv, fetchFromGitHub, which, ocaml, findlib }:
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if !stdenv.lib.versionAtLeast ocaml.version "4.02"
then throw "camlpdf is not available for OCaml ${ocaml.version}"
else
stdenv.mkDerivation rec {
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version = "2.3.1";
name = "ocaml${ocaml.version}-camlpdf-${version}";
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src = fetchFromGitHub {
owner = "johnwhitington";
repo = "camlpdf";
rev = "v${version}";
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sha256 = "1q69hhk63z836jbkv4wsng27w35w0qpz01c7ax0mqm8d8kmnr0v4";
};
buildInputs = [ which ocaml findlib ];
# Version number in META file is wrong
patchPhase = ''
patch -p 0 META <<EOF
3c3
< version="1.7.1"
---
> version="${version}"
EOF
'';
preInstall = ''
mkdir -p $out/lib/ocaml/${ocaml.version}/site-lib/stublibs
'';
meta = with stdenv.lib; {
description = "An OCaml library for reading, writing and modifying PDF files";
homepage = "https://github.com/johnwhitington/camlpdf";
license = licenses.lgpl21Plus;
maintainers = with maintainers; [vbgl];
};
}