First step

binary-tarball.nix

@@ -0,0 +1,81 @@
+{ runCommand
+, version
+, system
+, nix
+, cacert
+}:
+
+let
+
+  installerClosureInfo = buildPackages.closureInfo {
+    rootPaths = [ nix cacert ];
+  };
+
+  env = {
+    meta.description = "Distribution-independent Nix bootstrap binaries for ${system}";
+  };
+
+in
+
+runCommand "nix-binary-tarball-${version}" env ''
+  cp ${installerClosureInfo}/registration $TMPDIR/reginfo
+  cp ${./scripts/create-darwin-volume.sh} $TMPDIR/create-darwin-volume.sh
+  substitute ${./scripts/install-nix-from-closure.sh} $TMPDIR/install \
+    --subst-var-by nix ${nix} \
+    --subst-var-by cacert ${cacert}
+
+  substitute ${./scripts/install-darwin-multi-user.sh} $TMPDIR/install-darwin-multi-user.sh \
+    --subst-var-by nix ${nix} \
+    --subst-var-by cacert ${cacert}
+  substitute ${./scripts/install-systemd-multi-user.sh} $TMPDIR/install-systemd-multi-user.sh \
+    --subst-var-by nix ${nix} \
+    --subst-var-by cacert ${cacert}
+  substitute ${./scripts/install-multi-user.sh} $TMPDIR/install-multi-user \
+    --subst-var-by nix ${nix} \
+    --subst-var-by cacert ${cacert}
+
+  if type -p shellcheck; then
+    # SC1090: Don't worry about not being able to find
+    #         $nix/etc/profile.d/nix.sh
+    shellcheck --exclude SC1090 $TMPDIR/install
+    shellcheck $TMPDIR/create-darwin-volume.sh
+    shellcheck $TMPDIR/install-darwin-multi-user.sh
+    shellcheck $TMPDIR/install-systemd-multi-user.sh
+
+    # SC1091: Don't panic about not being able to source
+    #         /etc/profile
+    # SC2002: Ignore "useless cat" "error", when loading
+    #         .reginfo, as the cat is a much cleaner
+    #         implementation, even though it is "useless"
+    # SC2116: Allow ROOT_HOME=$(echo ~root) for resolving
+    #         root's home directory
+    shellcheck --external-sources \
+      --exclude SC1091,SC2002,SC2116 $TMPDIR/install-multi-user
+  fi
+
+  chmod +x $TMPDIR/install
+  chmod +x $TMPDIR/create-darwin-volume.sh
+  chmod +x $TMPDIR/install-darwin-multi-user.sh
+  chmod +x $TMPDIR/install-systemd-multi-user.sh
+  chmod +x $TMPDIR/install-multi-user
+  dir=nix-${version}-${system}
+  fn=$out/$dir.tar.xz
+  mkdir -p $out/nix-support
+  echo "file binary-dist $fn" >> $out/nix-support/hydra-build-products
+  tar cvfJ $fn \
+    --owner=0 --group=0 --mode=u+rw,uga+r \
+    --mtime='1970-01-01' \
+    --absolute-names \
+    --hard-dereference \
+    --transform "s,$TMPDIR/install,$dir/install," \
+    --transform "s,$TMPDIR/create-darwin-volume.sh,$dir/create-darwin-volume.sh," \
+    --transform "s,$TMPDIR/reginfo,$dir/.reginfo," \
+    --transform "s,$NIX_STORE,$dir/store,S" \
+    $TMPDIR/install \
+    $TMPDIR/create-darwin-volume.sh \
+    $TMPDIR/install-darwin-multi-user.sh \
+    $TMPDIR/install-systemd-multi-user.sh \
+    $TMPDIR/install-multi-user \
+    $TMPDIR/reginfo \
+    $(cat ${installerClosureInfo}/store-paths)
+''

flake.nix

@@ -7,7 +7,7 @@
   inputs.flake-compat = { url = "github:edolstra/flake-compat"; flake = false; };
   inputs.libgit2 = { url = "github:libgit2/libgit2"; flake = false; };
 
-  outputs = { self, nixpkgs, nixpkgs-regression, lowdown-src, flake-compat, libgit2 }:
+  outputs = { self, nixpkgs, nixpkgs-regression, lowdown-src, libgit2 }:
 
     let
       inherit (nixpkgs) lib;
@@ -34,7 +34,14 @@
         "x86_64-freebsd13" "x86_64-netbsd"
       ];
 
-      stdenvs = [ "gccStdenv" "clangStdenv" "clang11Stdenv" "stdenv" "libcxxStdenv" "ccacheStdenv" ];
+      stdenvs = [
+        "ccacheStdenv"
+        "clang11Stdenv"
+        "clangStdenv"
+        "gccStdenv"
+        "libcxxStdenv"
+        "stdenv"
+      ];
 
       forAllSystems = lib.genAttrs systems;
 
@@ -326,82 +333,18 @@
         '';
       };
 
-      binaryTarball = nix: pkgs:
-        let
-          inherit (pkgs) buildPackages;
-          inherit (pkgs) cacert;
-          installerClosureInfo = buildPackages.closureInfo { rootPaths = [ nix cacert ]; };
-        in
-
-        buildPackages.runCommand "nix-binary-tarball-${version}"
-          { #nativeBuildInputs = lib.optional (system != "aarch64-linux") shellcheck;
-            meta.description = "Distribution-independent Nix bootstrap binaries for ${pkgs.system}";
-          }
-          ''
-            cp ${installerClosureInfo}/registration $TMPDIR/reginfo
-            cp ${./scripts/create-darwin-volume.sh} $TMPDIR/create-darwin-volume.sh
-            substitute ${./scripts/install-nix-from-closure.sh} $TMPDIR/install \
-              --subst-var-by nix ${nix} \
-              --subst-var-by cacert ${cacert}
-
-            substitute ${./scripts/install-darwin-multi-user.sh} $TMPDIR/install-darwin-multi-user.sh \
-              --subst-var-by nix ${nix} \
-              --subst-var-by cacert ${cacert}
-            substitute ${./scripts/install-systemd-multi-user.sh} $TMPDIR/install-systemd-multi-user.sh \
-              --subst-var-by nix ${nix} \
-              --subst-var-by cacert ${cacert}
-            substitute ${./scripts/install-multi-user.sh} $TMPDIR/install-multi-user \
-              --subst-var-by nix ${nix} \
-              --subst-var-by cacert ${cacert}
-
-            if type -p shellcheck; then
-              # SC1090: Don't worry about not being able to find
-              #         $nix/etc/profile.d/nix.sh
-              shellcheck --exclude SC1090 $TMPDIR/install
-              shellcheck $TMPDIR/create-darwin-volume.sh
-              shellcheck $TMPDIR/install-darwin-multi-user.sh
-              shellcheck $TMPDIR/install-systemd-multi-user.sh
-
-              # SC1091: Don't panic about not being able to source
-              #         /etc/profile
-              # SC2002: Ignore "useless cat" "error", when loading
-              #         .reginfo, as the cat is a much cleaner
-              #         implementation, even though it is "useless"
-              # SC2116: Allow ROOT_HOME=$(echo ~root) for resolving
-              #         root's home directory
-              shellcheck --external-sources \
-                --exclude SC1091,SC2002,SC2116 $TMPDIR/install-multi-user
-            fi
-
-            chmod +x $TMPDIR/install
-            chmod +x $TMPDIR/create-darwin-volume.sh
-            chmod +x $TMPDIR/install-darwin-multi-user.sh
-            chmod +x $TMPDIR/install-systemd-multi-user.sh
-            chmod +x $TMPDIR/install-multi-user
-            dir=nix-${version}-${pkgs.system}
-            fn=$out/$dir.tar.xz
-            mkdir -p $out/nix-support
-            echo "file binary-dist $fn" >> $out/nix-support/hydra-build-products
-            tar cvfJ $fn \
-              --owner=0 --group=0 --mode=u+rw,uga+r \
-              --mtime='1970-01-01' \
-              --absolute-names \
-              --hard-dereference \
-              --transform "s,$TMPDIR/install,$dir/install," \
-              --transform "s,$TMPDIR/create-darwin-volume.sh,$dir/create-darwin-volume.sh," \
-              --transform "s,$TMPDIR/reginfo,$dir/.reginfo," \
-              --transform "s,$NIX_STORE,$dir/store,S" \
-              $TMPDIR/install \
-              $TMPDIR/create-darwin-volume.sh \
-              $TMPDIR/install-darwin-multi-user.sh \
-              $TMPDIR/install-systemd-multi-user.sh \
-              $TMPDIR/install-multi-user \
-              $TMPDIR/reginfo \
-              $(cat ${installerClosureInfo}/store-paths)
-          '';
+      binaryTarball = nix: pkgs: pkgs.callPackage ./binary-tarball.nix {
+        inherit nix;
+      };
 
       overlayFor = getStdenv: final: prev:
-        let currentStdenv = getStdenv final; in
+        let
+          stdenv = getStdenv final;
+
+          lowdown-nix = final.callPackage ./lowdown.nix {
+            inherit lowdown-src stdenv;
+          };
+        in
         {
           nixStable = prev.nix;
 
@@ -409,127 +352,68 @@
           nixUnstable = prev.nixUnstable;
 
           nix =
-          with final;
-          with commonDeps {
-            inherit pkgs;
-            inherit (currentStdenv.hostPlatform) isStatic;
-          };
             let
-            canRunInstalled = currentStdenv.buildPlatform.canExecute currentStdenv.hostPlatform;
-          in currentStdenv.mkDerivation (finalAttrs: {
-            name = "nix-${version}";
-            inherit version;
+              officialRelease = false;
+              versionSuffix =
+                if officialRelease
+                then ""
+                else "pre${builtins.substring 0 8 (self.lastModifiedDate or self.lastModified or "19700101")}_${self.shortRev or "dirty"}";
 
-            src = nixSrc;
-            VERSION_SUFFIX = versionSuffix;
+              sh = final.busybox-sandbox-shell or (final.busybox.override {
+                useMusl = true;
+                enableStatic = true;
+                enableMinimal = true;
+                extraConfig = ''
+                  CONFIG_FEATURE_FANCY_ECHO y
+                  CONFIG_FEATURE_SH_MATH y
+                  CONFIG_FEATURE_SH_MATH_64 y
 
-            outputs = [ "out" "dev" "doc" ]
-              ++ lib.optional (currentStdenv.hostPlatform != currentStdenv.buildPlatform) "check";
+                  CONFIG_ASH y
+                  CONFIG_ASH_OPTIMIZE_FOR_SIZE y
 
-            nativeBuildInputs = nativeBuildDeps;
-            buildInputs = buildDeps
-              # There have been issues building these dependencies
-              ++ lib.optionals (currentStdenv.hostPlatform == currentStdenv.buildPlatform) awsDeps
-              ++ lib.optionals finalAttrs.doCheck checkDeps;
-
-            propagatedBuildInputs = propagatedDeps;
-
-            disallowedReferences = [ boost-nix ];
-
-            preConfigure = lib.optionalString (! currentStdenv.hostPlatform.isStatic)
-              ''
-                # Copy libboost_context so we don't get all of Boost in our closure.
-                # https://github.com/NixOS/nixpkgs/issues/45462
-                mkdir -p $out/lib
-                cp -pd ${boost-nix}/lib/{libboost_context*,libboost_thread*,libboost_system*,libboost_regex*} $out/lib
-                rm -f $out/lib/*.a
-                ${lib.optionalString currentStdenv.hostPlatform.isLinux ''
-                  chmod u+w $out/lib/*.so.*
-                  patchelf --set-rpath $out/lib:${currentStdenv.cc.cc.lib}/lib $out/lib/libboost_thread.so.*
-                ''}
-                ${lib.optionalString currentStdenv.hostPlatform.isDarwin ''
-                  for LIB in $out/lib/*.dylib; do
-                    chmod u+w $LIB
-                    install_name_tool -id $LIB $LIB
-                    install_name_tool -delete_rpath ${boost-nix}/lib/ $LIB || true
-                  done
-                  install_name_tool -change ${boost-nix}/lib/libboost_system.dylib $out/lib/libboost_system.dylib $out/lib/libboost_thread.dylib
-                ''}
+                  CONFIG_ASH_ALIAS y
+                  CONFIG_ASH_BASH_COMPAT y
+                  CONFIG_ASH_CMDCMD y
+                  CONFIG_ASH_ECHO y
+                  CONFIG_ASH_GETOPTS y
+                  CONFIG_ASH_INTERNAL_GLOB y
+                  CONFIG_ASH_JOB_CONTROL y
+                  CONFIG_ASH_PRINTF y
+                  CONFIG_ASH_TEST y
                 '';
-
-            configureFlags = configureFlags ++
-              [ "--sysconfdir=/etc" ] ++
-              lib.optional stdenv.hostPlatform.isStatic "--enable-embedded-sandbox-shell" ++
-              [ (lib.enableFeature finalAttrs.doCheck "tests") ] ++
-              lib.optionals finalAttrs.doCheck testConfigureFlags ++
-              lib.optional (!canRunInstalled) "--disable-doc-gen";
-
-            enableParallelBuilding = true;
-
-            makeFlags = "profiledir=$(out)/etc/profile.d PRECOMPILE_HEADERS=1";
-
-            doCheck = true;
-
-            installFlags = "sysconfdir=$(out)/etc";
-
-            postInstall = ''
-              mkdir -p $doc/nix-support
-              echo "doc manual $doc/share/doc/nix/manual" >> $doc/nix-support/hydra-build-products
-              ${lib.optionalString currentStdenv.hostPlatform.isStatic ''
-              mkdir -p $out/nix-support
-              echo "file binary-dist $out/bin/nix" >> $out/nix-support/hydra-build-products
-              ''}
-              ${lib.optionalString currentStdenv.isDarwin ''
-              install_name_tool \
-                -change ${boost-nix}/lib/libboost_context.dylib \
-                $out/lib/libboost_context.dylib \
-                $out/lib/libnixutil.dylib
-              install_name_tool \
-                -change ${boost-nix}/lib/libboost_regex.dylib \
-                $out/lib/libboost_regex.dylib \
-                $out/lib/libnixexpr.dylib
-              ''}
-            '';
-
-            doInstallCheck = finalAttrs.doCheck;
-            installCheckFlags = "sysconfdir=$(out)/etc";
-            installCheckTarget = "installcheck"; # work around buggy detection in stdenv
-
-            separateDebugInfo = !currentStdenv.hostPlatform.isStatic;
-
-            strictDeps = true;
-
-            hardeningDisable = lib.optional stdenv.hostPlatform.isStatic "pie";
-
-            passthru.perl-bindings = final.callPackage ./perl {
-              inherit fileset;
-              stdenv = currentStdenv;
-            };
-
-            meta.platforms = lib.platforms.unix;
-            meta.mainProgram = "nix";
               });
 
-          boost-nix = final.boost.override {
-            enableIcu = false;
+              boehmgc = (final.boehmgc.override {
+                enableLargeConfig = true;
+              }).overrideAttrs(o: {
+                patches = (o.patches or []) ++ [
+                  ./boehmgc-coroutine-sp-fallback.diff
+
+                  # https://github.com/ivmai/bdwgc/pull/586
+                  ./boehmgc-traceable_allocator-public.diff
+                ];
+              });
+
+            in final.callPackage ./package.nix {
+              inherit
+                boehmgc
+                fileset
+                sh
+                stdenv
+                versionSuffix
+                ;
+              boost = final.boost.override { enableIcu = false; };
+              libgit2 = final.libgit2.overrideAttrs (attrs: {
+                src = libgit2;
+                version = libgit2.lastModifiedDate;
+                cmakeFlags = attrs.cmakeFlags or []
+                  ++ [ "-DUSE_SSH=exec" ];
+              });
+              lowdown = lowdown-nix;
+              officialRelease = false;
             };
 
-          lowdown-nix = with final; currentStdenv.mkDerivation rec {
-            name = "lowdown-0.9.0";
-
-            src = lowdown-src;
-
-            outputs = [ "out" "bin" "dev" ];
-
-            nativeBuildInputs = [ buildPackages.which ];
-
-            configurePhase = ''
-                ${if (currentStdenv.isDarwin && currentStdenv.isAarch64) then "echo \"HAVE_SANDBOX_INIT=false\" > configure.local" else ""}
-                ./configure \
-                  PREFIX=${placeholder "dev"} \
-                  BINDIR=${placeholder "bin"}/bin
-            '';
-          };
+            inherit lowdown-nix;
           };
 
     in {

lowdown.nix

@@ -0,0 +1,22 @@
+{ lib
+, stdenv
+, which
+, lowdown-src
+}:
+
+stdenv.mkDerivation rec {
+  name = "lowdown-0.9.0";
+
+  src = lowdown-src;
+
+  outputs = [ "out" "bin" "dev" ];
+
+  nativeBuildInputs = [ which ];
+
+  configurePhase = ''
+      ${lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) "echo \"HAVE_SANDBOX_INIT=false\" > configure.local"}
+      ./configure \
+        PREFIX=${placeholder "dev"} \
+        BINDIR=${placeholder "bin"}/bin
+  '';
+}

package.nix

@@ -0,0 +1,239 @@
+{ lib
+, callPackage
+, stdenv
+, versionSuffix ? ""
+, officialRelease ? false
+, buildUnreleasedNotes ? false
+, autoconf-archive
+, autoreconfHook
+, aws-sdk-cpp
+, boehmgc
+, nlohmann_json
+, bison
+, boost
+, brotli
+, bzip2
+, changelog-d
+, curl
+, editline
+, fileset
+, flex
+, git
+, gtest
+, jq
+, libarchive
+, libcpuid
+, libgit2
+, libseccomp
+, libsodium
+, lowdown
+, mdbook
+, mdbook-linkcheck
+, mercurial
+, openssh
+, openssl
+, pkg-config
+, rapidcheck
+, sh
+, sqlite
+, util-linux
+, xz
+}:
+
+let
+
+  version = lib.fileContents ./.version + versionSuffix;
+
+  inherit (stdenv.hostPlatform) isStatic;
+
+  canRunInstalled = stdenv.buildPlatform.canExecute stdenv.hostPlatform;
+in
+
+stdenv.mkDerivation (finalAttrs: {
+  name = "nix-${version}";
+  inherit version;
+
+  src =
+    let
+      baseFiles = fileset.fileFilter (f: f.name != ".gitignore") ./.;
+      configureFiles = fileset.unions [
+        ./.version
+        ./configure.ac
+        ./m4
+        # TODO: do we really need README.md? It doesn't seem used in the build.
+        ./README.md
+      ];
+
+      topLevelBuildFiles = fileset.unions [
+        ./local.mk
+        ./Makefile
+        ./Makefile.config.in
+        ./mk
+      ];
+
+      functionalTestFiles = fileset.unions [
+        ./tests/functional
+        (fileset.fileFilter (f: lib.strings.hasPrefix "nix-profile" f.name) ./scripts)
+      ];
+
+    in
+      fileset.toSource {
+        root = ./.;
+        fileset = fileset.intersect baseFiles (fileset.unions [
+          configureFiles
+          topLevelBuildFiles
+          ./boehmgc-coroutine-sp-fallback.diff
+          ./doc
+          ./misc
+          ./precompiled-headers.h
+          ./src
+          ./unit-test-data
+          ./COPYING
+          ./scripts/local.mk
+          functionalTestFiles
+        ]);
+      };
+
+  VERSION_SUFFIX = versionSuffix;
+
+  outputs = [ "out" "dev" "doc" ]
+    ++ lib.optional (stdenv.hostPlatform != stdenv.buildPlatform) "check";
+
+  nativeBuildInputs = [
+    bison
+    flex
+    (lib.getBin lowdown)
+    mdbook
+    mdbook-linkcheck
+    autoconf-archive
+    autoreconfHook
+    pkg-config
+
+    # Tests
+    git
+    mercurial # FIXME: remove? only needed for tests
+    jq # Also for custom mdBook preprocessor.
+    openssh # only needed for tests (ssh-keygen)
+  ]
+  ++ lib.optional stdenv.hostPlatform.isLinux util-linux
+  # Official releases don't have rl-next, so we don't need to compile a changelog
+  ++ lib.optional (!officialRelease && buildUnreleasedNotes) changelog-d;
+
+  buildInputs = [
+    boost
+    brotli
+    bzip2
+    curl
+    editline
+    libarchive
+    libgit2
+    libsodium
+    lowdown
+    openssl
+    sqlite
+    xz
+  ]
+  ++ lib.optionals stdenv.isLinux [libseccomp]
+  ++ lib.optional stdenv.hostPlatform.isx86_64 libcpuid
+  # There have been issues building these dependencies
+  ++ lib.optionals (stdenv.hostPlatform == stdenv.buildPlatform) (lib.optional (stdenv.isLinux || stdenv.isDarwin)
+    (aws-sdk-cpp.override {
+      apis = ["s3" "transfer"];
+      customMemoryManagement = false;
+    }))
+  ++ lib.optionals finalAttrs.doCheck ([
+    gtest
+    rapidcheck
+  ]);
+
+  propagatedBuildInputs = [
+    boehmgc
+    nlohmann_json
+  ];
+
+  disallowedReferences = [ boost ];
+
+  preConfigure = lib.optionalString (! stdenv.hostPlatform.isStatic)
+    ''
+      # Copy libboost_context so we don't get all of Boost in our closure.
+      # https://github.com/NixOS/nixpkgs/issues/45462
+      mkdir -p $out/lib
+      cp -pd ${boost}/lib/{libboost_context*,libboost_thread*,libboost_system*,libboost_regex*} $out/lib
+      rm -f $out/lib/*.a
+      ${lib.optionalString stdenv.hostPlatform.isLinux ''
+        chmod u+w $out/lib/*.so.*
+        patchelf --set-rpath $out/lib:${stdenv.cc.cc.lib}/lib $out/lib/libboost_thread.so.*
+      ''}
+      ${lib.optionalString stdenv.hostPlatform.isDarwin ''
+        for LIB in $out/lib/*.dylib; do
+          chmod u+w $LIB
+          install_name_tool -id $LIB $LIB
+          install_name_tool -delete_rpath ${boost}/lib/ $LIB || true
+        done
+        install_name_tool -change ${boost}/lib/libboost_system.dylib $out/lib/libboost_system.dylib $out/lib/libboost_thread.dylib
+      ''}
+    '';
+
+  configureFlags =
+    lib.optionals stdenv.isLinux [
+      "--with-boost=${boost}/lib"
+      "--with-sandbox-shell=${sh}/bin/busybox"
+    ]
+    ++ lib.optionals (stdenv.isLinux && !(isStatic && stdenv.system == "aarch64-linux")) [
+      "LDFLAGS=-fuse-ld=gold"
+    ]
+    ++ [ "--sysconfdir=/etc" ]
+    ++ lib.optional stdenv.hostPlatform.isStatic "--enable-embedded-sandbox-shell"
+    ++ [ (lib.enableFeature finalAttrs.doCheck "tests") ]
+    ++ lib.optionals finalAttrs.doCheck ([ "RAPIDCHECK_HEADERS=${lib.getDev rapidcheck}/extras/gtest/include" ]
+    ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
+      "--enable-install-unit-tests"
+      "--with-check-bin-dir=${builtins.placeholder "check"}/bin"
+      "--with-check-lib-dir=${builtins.placeholder "check"}/lib"
+    ])
+    ++ lib.optional (!canRunInstalled) "--disable-doc-gen";
+
+  enableParallelBuilding = true;
+
+  makeFlags = "profiledir=$(out)/etc/profile.d PRECOMPILE_HEADERS=1";
+
+  doCheck = true;
+
+  installFlags = "sysconfdir=$(out)/etc";
+
+  postInstall = ''
+    mkdir -p $doc/nix-support
+    echo "doc manual $doc/share/doc/nix/manual" >> $doc/nix-support/hydra-build-products
+    ${lib.optionalString stdenv.hostPlatform.isStatic ''
+      mkdir -p $out/nix-support
+      echo "file binary-dist $out/bin/nix" >> $out/nix-support/hydra-build-products
+    ''}
+    ${lib.optionalString stdenv.isDarwin ''
+      install_name_tool \
+      -change ${boost}/lib/libboost_context.dylib \
+      $out/lib/libboost_context.dylib \
+      $out/lib/libnixutil.dylib
+      install_name_tool \
+      -change ${boost}/lib/libboost_regex.dylib \
+      $out/lib/libboost_regex.dylib \
+      $out/lib/libnixexpr.dylib
+    ''}
+  '';
+
+  doInstallCheck = finalAttrs.doCheck;
+  installCheckFlags = "sysconfdir=$(out)/etc";
+  installCheckTarget = "installcheck"; # work around buggy detection in stdenv
+
+  separateDebugInfo = !stdenv.hostPlatform.isStatic;
+
+  strictDeps = true;
+
+  hardeningDisable = lib.optional stdenv.hostPlatform.isStatic "pie";
+
+  passthru.perl-bindings = callPackage ./perl {
+    inherit fileset stdenv;
+  };
+
+  meta.platforms = lib.platforms.unix;
+  meta.mainProgram = "nix";
+})