{ bdbSupport ? true # build support for Berkeley DB repositories
, httpServer ? false # build Apache DAV module
, httpSupport ? true # client must support http
, pythonBindings ? false
, perlBindings ? false
, javahlBindings ? false
, saslSupport ? false
, lib, stdenv, fetchurl, apr, aprutil, zlib, sqlite, openssl, lz4, utf8proc
, CoreServices, Security
, autoconf, libtool
, apacheHttpd ? null, expat, swig ? null, jdk ? null, python3 ? null, py3c ? null, perl ? null
, sasl ? null, serf ? null
}:

assert bdbSupport -> aprutil.bdbSupport;
assert httpServer -> apacheHttpd != null;
assert pythonBindings -> swig != null && python3 != null && py3c != null;
assert javahlBindings -> jdk != null && perl != null;

let
  # Update libtool for macOS 11 support
  needsAutogen = stdenv.hostPlatform.isDarwin && lib.versionAtLeast stdenv.hostPlatform.darwinMinVersion "11";

  common = { version, sha256, extraPatches ? [ ] }: stdenv.mkDerivation (rec {
    inherit version;
    pname = "subversion${lib.optionalString (!bdbSupport && perlBindings && pythonBindings) "-client"}";

    src = fetchurl {
      url = "mirror://apache/subversion/subversion-${version}.tar.bz2";
      inherit sha256;
    };

    # Can't do separate $lib and $bin, as libs reference bins
    outputs = [ "out" "dev" "man" ];

    nativeBuildInputs = lib.optionals needsAutogen [ autoconf libtool python3 ];

    buildInputs = [ zlib apr aprutil sqlite openssl lz4 utf8proc ]
      ++ lib.optional httpSupport serf
      ++ lib.optionals pythonBindings [ python3 py3c ]
      ++ lib.optional perlBindings perl
      ++ lib.optional saslSupport sasl
      ++ lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices Security ];

    patches = [ ./apr-1.patch ] ++ extraPatches;

    # We are hitting the following issue even with APR 1.6.x
    # -> https://issues.apache.org/jira/browse/SVN-4813
    # "-P" CPPFLAG is needed to build Python bindings and subversionClient
    CPPFLAGS = [ "-P" ];

    preConfigure = lib.optionalString needsAutogen ''
      ./autogen.sh
    '';

    configureFlags = [
      (lib.withFeature bdbSupport "berkeley-db")
      (lib.withFeatureAs httpServer "apxs" "${apacheHttpd.dev}/bin/apxs")
      (lib.withFeatureAs (pythonBindings || perlBindings) "swig" swig)
      (lib.withFeatureAs saslSupport "sasl" sasl)
      (lib.withFeatureAs httpSupport "serf" serf)
      "--with-zlib=${zlib.dev}"
      "--with-sqlite=${sqlite.dev}"
    ] ++ lib.optionals javahlBindings [
      "--enable-javahl"
      "--with-jdk=${jdk}"
    ];

    preBuild = ''
      makeFlagsArray=(APACHE_LIBEXECDIR=$out/modules)
    '';

    postInstall = ''
      if test -n "$pythonBindings"; then
          make swig-py swig_pydir=$(toPythonPath $out)/libsvn swig_pydir_extra=$(toPythonPath $out)/svn
          make install-swig-py swig_pydir=$(toPythonPath $out)/libsvn swig_pydir_extra=$(toPythonPath $out)/svn
      fi

      if test -n "$perlBindings"; then
          make swig-pl-lib
          make install-swig-pl-lib
          cd subversion/bindings/swig/perl/native
          perl Makefile.PL PREFIX=$out
          make install
          cd -
      fi

      mkdir -p $out/share/bash-completion/completions
      cp tools/client-side/bash_completion $out/share/bash-completion/completions/subversion

      for f in $out/lib/*.la $out/lib/python*/site-packages/*/*.la; do
        substituteInPlace $f \
          --replace "${expat.dev}/lib" "${expat.out}/lib" \
          --replace "${zlib.dev}/lib" "${zlib.out}/lib" \
          --replace "${sqlite.dev}/lib" "${sqlite.out}/lib" \
          --replace "${openssl.dev}/lib" "${lib.getLib openssl}/lib"
      done
    '';

    inherit perlBindings pythonBindings;

    enableParallelBuilding = true;

    checkInputs = [ python3 ];
    doCheck = false; # fails 10 out of ~2300 tests

    meta = with lib; {
      description = "A version control system intended to be a compelling replacement for CVS in the open source community";
      license = licenses.asl20;
      homepage = "https://subversion.apache.org/";
      maintainers = with maintainers; [ eelco lovek323 ];
      platforms = platforms.linux ++ platforms.darwin;
    };

  } // lib.optionalAttrs stdenv.isDarwin {
    CXX = "clang++";
    CC = "clang";
    CPP = "clang -E";
    CXXCPP = "clang++ -E";
  });

in {
  subversion = common {
    version = "1.14.2";
    sha256 = "sha256-yRMOjQt1copm8OcDj8dwUuZxgw14W1YWqtU7SBDTzCg=";
  };
}