Add 'nixpkgs/' from commit 'abf060725d7614bd3b9f96764262dfbc2f9c2199'

git-subtree-dir: nixpkgs
git-subtree-mainline: 4e31070265257dc67d120c27e0f75c2344fdfa9a
git-subtree-split: abf060725d7614bd3b9f96764262dfbc2f9c2199

10 files changed, 944 insertions, 0 deletions

diff --git a/nixpkgs/pkgs/development/libraries/v8/3.14.nix b/nixpkgs/pkgs/development/libraries/v8/3.14.nix
new file mode 100644
index 000000000000..827274251ed9
--- /dev/null
+++ b/nixpkgs/pkgs/development/libraries/v8/3.14.nix
@@ -0,0 +1,86 @@
+# This old version of V8 is still needed for the R V8 module
+{ stdenv, fetchFromGitHub, gyp, readline, python, which, icu, ... }:
+
+assert readline != null;
+
+with stdenv.lib;
+let
+  version = "3.14.5.10";
+  sha256 = "08vhl84166x13b3cbx8y0g99yqx772zd33gawsa1nxqkyrykql6k";
+
+  arch = if stdenv.is64bit then "x64" else "ia32";
+
+in
+stdenv.mkDerivation rec {
+  name = "v8-${version}";
+  inherit version;
+
+  src = fetchFromGitHub {
+    owner = "v8";
+    repo = "v8";
+    rev = "${version}";
+    inherit sha256;
+  };
+  patchPhase = ''
+    sed -i 's,#!/usr/bin/env python,#!${python}/bin/python,' build/gyp_v8
+    sed -i 's,#!/usr/bin/python,#!${python}/bin/python,' build/gyp_v8
+  '';
+
+  configurePhase = ''
+    PYTHONPATH="tools/generate_shim_headers:$PYTHONPATH" \
+    PYTHONPATH="$(toPythonPath ${gyp}):$PYTHONPATH" \
+      build/gyp_v8 \
+        -f make \
+        --generator-output="out" \
+        -Dflock_index=0 \
+        -Dv8_enable_i18n_support=1 \
+        -Duse_system_icu=1 \
+        -Dconsole=readline \
+        -Dcomponent=shared_library \
+        -Dv8_target_arch=${arch}
+  '';
+
+  nativeBuildInputs = [ which ];
+  buildInputs = [ readline python icu ];
+
+  # http://code.google.com/p/v8/issues/detail?id=2149
+  NIX_CFLAGS_COMPILE = concatStringsSep " " [
+    "-Wno-error=strict-overflow"
+    "-Wno-unused-local-typedefs"
+    "-Wno-aggressive-loop-optimizations"
+  ];
+
+  buildFlags = [
+    "LINK=g++"
+    "-C out"
+    "builddir=$(CURDIR)/Release"
+    "BUILDTYPE=Release"
+  ];
+
+  postPatch = stdenv.lib.optionalString (!stdenv.cc.isClang) ''
+    sed -i build/standalone.gyp -e 's,-Wno-format-pedantic,,g'
+  '';
+
+  enableParallelBuilding = true;
+
+  installPhase = ''
+    install -vD out/Release/d8 "$out/bin/d8"
+    ${if stdenv.hostPlatform.system == "x86_64-darwin" then ''
+    install -vD out/Release/lib.target/libv8.dylib "$out/lib/libv8.dylib"
+    '' else ''
+    install -vD out/Release/lib.target/libv8.so "$out/lib/libv8.so"
+    ''}
+    cp -vr include "$out/"
+  '';
+
+  postFixup = if stdenv.isDarwin then ''
+    install_name_tool -change /usr/local/lib/libv8.dylib $out/lib/libv8.dylib -change /usr/lib/libgcc_s.1.dylib ${stdenv.cc.cc.lib}/lib/libgcc_s.1.dylib $out/bin/d8
+    install_name_tool -id $out/lib/libv8.dylib -change /usr/lib/libgcc_s.1.dylib ${stdenv.cc.cc.lib}/lib/libgcc_s.1.dylib $out/lib/libv8.dylib
+  '' else null;
+
+  meta = with stdenv.lib; {
+    description = "Google's open source JavaScript engine";
+    platforms = platforms.linux;
+    license = licenses.bsd3;
+  };
+}
diff --git a/nixpkgs/pkgs/development/libraries/v8/3.16.14.nix b/nixpkgs/pkgs/development/libraries/v8/3.16.14.nix
new file mode 100644
index 000000000000..a7dddd141246
--- /dev/null
+++ b/nixpkgs/pkgs/development/libraries/v8/3.16.14.nix
@@ -0,0 +1,81 @@
+{ stdenv, lib, fetchurl, gyp, readline, python, which, icu, utillinux, cctools }:
+
+assert readline != null;
+
+let
+  arch = if stdenv.isAarch32
+    then (if stdenv.is64bit then "arm64" else "arm")
+    else (if stdenv.is64bit then "x64" else "ia32");
+  armHardFloat = stdenv.isAarch32 && (stdenv.hostPlatform.platform.gcc.float or null) == "hard";
+in
+
+stdenv.mkDerivation rec {
+  name = "v8-${version}";
+  version = "3.16.14.11";
+
+  src = fetchurl {
+    url = "https://commondatastorage.googleapis.com/chromium-browser-official/"
+        + "${name}.tar.bz2";
+    sha256 = "1gpf2xvhxfs5ll3m2jlslsx9jfjbmrbz55iq362plflrvf8mbxhj";
+  };
+
+  postPatch = ''
+    sed -i 's/-Werror//' build/standalone.gypi build/common.gypi
+  '';
+
+  configurePhase = stdenv.lib.optionalString stdenv.isDarwin ''
+    export GYP_DEFINES="mac_deployment_target=$MACOSX_DEPLOYMENT_TARGET"
+  '' + ''
+    PYTHONPATH="tools/generate_shim_headers:$PYTHONPATH" \
+      ${gyp}/bin/gyp \
+        -f make \
+        --generator-output="out" \
+        -Dflock_index=0 \
+        -Dv8_enable_i18n_support=1 \
+        -Duse_system_icu=1 \
+        -Dconsole=readline \
+        -Dcomponent=shared_library \
+        -Dv8_target_arch=${arch} \
+        ${lib.optionalString armHardFloat "-Dv8_use_arm_eabi_hardfloat=true"} \
+        --depth=. -Ibuild/standalone.gypi \
+        build/all.gyp
+  '' + stdenv.lib.optionalString stdenv.isDarwin ''
+    sed -i 's@/usr/bin/env python@${python}/bin/python@g' out/gyp-mac-tool
+  '';
+
+  nativeBuildInputs = [ which ];
+  buildInputs = [ readline python icu ]
+                  ++ lib.optional stdenv.isLinux utillinux
+                  ++ lib.optional stdenv.isDarwin cctools;
+
+  NIX_CFLAGS_COMPILE = "-Wno-error -w";
+
+  buildFlags = [
+    "-C out"
+    "builddir=$(CURDIR)/Release"
+    "BUILDTYPE=Release"
+  ];
+
+  enableParallelBuilding = true;
+
+  installPhase = ''
+    install -vD out/Release/d8 "$out/bin/d8"
+    ${if stdenv.isDarwin then ''
+    install -vD out/Release/libv8.dylib "$out/lib/libv8.dylib"
+    '' else ''
+    install -vD out/Release/lib.target/libv8.so "$out/lib/libv8.so"
+    ''}
+    cp -vr include "$out/"
+  '';
+
+  postFixup = if stdenv.isDarwin then ''
+    install_name_tool -change /usr/local/lib/libv8.dylib $out/lib/libv8.dylib $out/bin/d8
+    install_name_tool -id $out/lib/libv8.dylib $out/lib/libv8.dylib
+  '' else null;
+
+  meta = with stdenv.lib; {
+    description = "V8 is Google's open source JavaScript engine";
+    platforms = platforms.linux ++ platforms.darwin;
+    license = licenses.bsd3;
+  };
+}
diff --git a/nixpkgs/pkgs/development/libraries/v8/6_x.nix b/nixpkgs/pkgs/development/libraries/v8/6_x.nix
new file mode 100644
index 000000000000..85d0c0d91bb5
--- /dev/null
+++ b/nixpkgs/pkgs/development/libraries/v8/6_x.nix
@@ -0,0 +1,193 @@
+{ stdenv, lib, fetchgit, fetchFromGitHub, gn, ninja, python, glib, pkgconfig
+, doCheck ? false
+, snapshot ? true
+}:
+
+let
+  arch = if stdenv.isAarch32
+         then if stdenv.is64bit
+              then"arm64"
+              else "arm"
+         else if stdenv.is64bit
+              then"x64"
+              else "ia32";
+  git_url = "https://chromium.googlesource.com";
+
+  # This data is from the DEPS file in the root of a V8 checkout
+  deps = {
+    "base/trace_event/common" = fetchgit {
+      url    = "${git_url}/chromium/src/base/trace_event/common.git";
+      rev    = "211b3ed9d0481b4caddbee1322321b86a483ca1f";
+      sha256 = "080sya1dg32hi5gj7zr3r5l18r6w8g0imajyf3xfvnz67a2i8dd7";
+    };
+    "build" = fetchgit {
+      url    = "${git_url}/chromium/src/build.git";
+      rev    = "7315579e388589b62236ad933f09afd1e838d234";
+      sha256 = "14gsigyjfm03kfzmz0v6429b6qnycvzx0yj3vwaks8may26aiv71";
+    };
+    "buildtools" = fetchgit {
+      url    = "${git_url}/chromium/buildtools.git";
+      rev    = "0dd5c6f980d22be96b728155249df2da355989d9";
+      sha256 = "0m1fh0qjcx9c69khnqcsqvrnqs7ji6wfxns9vv9mknj20sph5ydr";
+    };
+    "test/benchmarks/data" = fetchgit {
+      url    = "${git_url}/v8/deps/third_party/benchmarks.git";
+      rev    = "05d7188267b4560491ff9155c5ee13e207ecd65f";
+      sha256 = "0ad2ay14bn67d61ks4dmzadfnhkj9bw28r4yjdjjyzck7qbnzchl";
+    };
+    "test/mozilla/data" = fetchgit {
+      url    = "${git_url}/v8/deps/third_party/mozilla-tests.git";
+      rev    = "f6c578a10ea707b1a8ab0b88943fe5115ce2b9be";
+      sha256 = "0rfdan76yfawqxbwwb35aa57b723j3z9fx5a2w16nls02yk2kqyn";
+    };
+    "test/test262/data" = fetchgit {
+      url    = "${git_url}/external/github.com/tc39/test262.git";
+      rev    = "a6c1d05ac4fed084fa047e4c52ab2a8c9c2a8aef";
+      sha256 = "1cy3val2ih6r4sbaxd1v9fir87mrlw1kr54s64g68gnch53ck9s3";
+    };
+    "test/test262/harness" = fetchgit {
+      url    = "${git_url}/external/github.com/test262-utils/test262-harness-py.git";
+      rev    = "0f2acdd882c84cff43b9d60df7574a1901e2cdcd";
+      sha256 = "00brj5avp43yamc92kinba2mg3a2x1rcd7wnm7z093l73idprvkp";
+    };
+    "test/wasm-js" = fetchgit {
+      url    = "${git_url}/external/github.com/WebAssembly/spec.git";
+      rev    = "2113ea7e106f8a964e0445ba38f289d2aa845edd";
+      sha256 = "07aw7x2xzmzk905mqf8gbbb1bi1a5kv99g8iv6x2p07d3zns7xzx";
+    };
+    "third_party/depot_tools" = fetchgit {
+      url    = "${git_url}/chromium/tools/depot_tools.git";
+      rev    = "fb734036f4b5ae6d5afc63cbfc41d3a5d1c29a82";
+      sha256 = "1738y7xgfnn0hfdr8g5jw7555841ycxbn580mdffwv4jnbn7120s";
+    };
+    "third_party/googletest/src" = fetchgit {
+      url    = "${git_url}/external/github.com/google/googletest.git";
+      rev    = "ce468a17c434e4e79724396ee1b51d86bfc8a88b";
+      sha256 = "0nik8wb1b0zk2sslawgp5h211r5bc4x7m962dgnmbk11ccvsmr23";
+    };
+    "third_party/icu" = fetchgit {
+      url    = "${git_url}/chromium/deps/icu.git";
+      rev    = "a9a2bd3ee4f1d313651c5272252aaf2a3e7ed529";
+      sha256 = "1bfyxakgv9z0rxbqsy5csi85kg8dqy7i6zybmng5wyzag9cns4f9";
+    };
+    "third_party/instrumented_libraries" = fetchgit {
+      url    = "${git_url}/chromium/src/third_party/instrumented_libraries.git";
+      rev    = "323cf32193caecbf074d1a0cb5b02b905f163e0f";
+      sha256 = "0q3n3ivqva28qpn67ds635521pwzpc9apcyagz65i9j17bb1k231";
+    };
+    "third_party/jinja2" = fetchgit {
+      url    = "${git_url}/chromium/src/third_party/jinja2.git";
+      rev    = "b41863e42637544c2941b574c7877d3e1f663e25";
+      sha256 = "1qgilclkav67m6cl2xq2kmzkswrkrb2axc2z8mw58fnch4j1jf1r";
+    };
+    "third_party/markupsafe" = fetchgit {
+      url    = "${git_url}/chromium/src/third_party/markupsafe.git";
+      rev    = "8f45f5cfa0009d2a70589bcda0349b8cb2b72783";
+      sha256 = "168ppjmicfdh4i1l0l25s86mdbrz9fgxmiq1rx33x79mph41scfz";
+    };
+    "third_party/proguard" = fetchgit {
+      url    = "${git_url}/chromium/src/third_party/proguard.git";
+      rev    = "eba7a98d98735b2cc65c54d36baa5c9b46fe4f8e";
+      sha256 = "1yx86z2p243b0ykixgqz6nlqfp8swa6n0yl5fgb29fa4jvsjz3d1";
+    };
+    "tools/clang" = fetchgit {
+      url    = "${git_url}/chromium/src/tools/clang.git";
+      rev    = "c0b1d892b2bc1291eb287d716ca239c1b03fb215";
+      sha256 = "1mz1pqzr2b37mymbkqkmpmj48j7a8ig0ibaw3dfilbx5nbl4wd2z";
+    };
+    "tools/gyp" = fetchgit {
+      url    = "${git_url}/external/gyp.git";
+      rev    = "d61a9397e668fa9843c4aa7da9e79460fe590bfb";
+      sha256 = "1z081h72mjy285jb1kj5xd0pb4p12n9blvsimsavyn3ldmswv0r0";
+    };
+    "tools/luci-go" = fetchgit {
+      url    = "${git_url}/chromium/src/tools/luci-go.git";
+      rev    = "abcd908f74fdb155cc8870f5cae48dff1ece7c3c";
+      sha256 = "07c8vanc31wal6aw8v0s499l7ifrgvdvi2sx4ln3nyha5ngxinld";
+    };
+    "tools/swarming_client" = fetchgit {
+      url    = "${git_url}/infra/luci/client-py.git";
+      rev    = "9a518d097dca20b7b00ce3bdfc5d418ccc79893a";
+      sha256 = "1d8nly7rp24gx7q0m01jvsc15nw5fahayfczwd40gzzzkmvhjazi";
+    };
+  };
+
+in
+
+stdenv.mkDerivation rec {
+  name = "v8-${version}";
+  version = "6.9.427.14";
+
+  inherit doCheck;
+
+  src = fetchFromGitHub {
+    owner = "v8";
+    repo = "v8";
+    rev = version;
+    sha256 = "13d50iz87qh7v8l8kjky8wqs9rvz02pgw74q8crqi5ywnvvill1x";
+  };
+
+  postUnpack = ''
+    ${lib.concatStringsSep "\n" (
+      lib.mapAttrsToList (n: v: ''
+        mkdir -p $sourceRoot/${n}
+        cp -r ${v}/* $sourceRoot/${n}
+      '') deps)}
+  '';
+
+  prePatch = ''
+    # use our gn, not the bundled one
+    sed -i -e 's#gn_path = .*#gn_path = "${gn}/bin/gn"#' tools/mb/mb.py
+
+    # disable tests
+    if [ "$doCheck" = "" ]; then sed -i -e '/"test:gn_all",/d' BUILD.gn; fi
+
+    # disable sysroot usage
+    chmod u+w build/config build/config/sysroot.gni
+    sed -i build/config/sysroot.gni \
+        -e '/use_sysroot =/ { s#\(use_sysroot =\).*#\1 false#; :a  n; /current_cpu/ { s/^/#/; ba };  }'
+
+    # patch shebangs (/usr/bin/env)
+    patchShebangs tools/dev/v8gen.py
+  '';
+
+  configurePhase = ''
+    tools/dev/v8gen.py -vv ${arch}.release -- \
+        is_component_build=true               \
+        ${if snapshot then "v8_use_external_startup_data=false" else "v8_use_snapshot=false"} \
+        is_clang=false                        \
+        linux_use_bundled_binutils=false      \
+        treat_warnings_as_errors=false        \
+        use_custom_libcxx=false               \
+        use_custom_libcxx_for_host=false
+  '';
+
+  nativeBuildInputs = [ gn ninja pkgconfig ];
+  buildInputs = [ python glib ];
+
+  buildPhase = ''
+    ninja -C out.gn/${arch}.release/
+  '';
+
+  enableParallelBuilding = true;
+
+  installPhase = ''
+    install -vD out.gn/${arch}.release/d8 "$out/bin/d8"
+    install -vD out.gn/${arch}.release/mksnapshot "$out/bin/mksnapshot"
+    mkdir -p "$out/lib"
+    for f in libicui18n.so libicuuc.so libv8_libbase.so libv8_libplatform.so libv8.so; do
+        install -vD out.gn/${arch}.release/$f "$out/lib/$f"
+    done
+    install -vD out.gn/${arch}.release/icudtl.dat "$out/lib/icudtl.dat"
+    mkdir -p "$out/include"
+    cp -vr include/*.h "$out/include"
+    cp -vr include/libplatform "$out/include"
+  '';
+
+  meta = with lib; {
+    description = "Google's open source JavaScript engine";
+    maintainers = with maintainers; [ cstrahan proglodyte ];
+    platforms = platforms.linux;
+    license = licenses.bsd3;
+  };
+}
diff --git a/nixpkgs/pkgs/development/libraries/v8/build-standalone-static-library.patch b/nixpkgs/pkgs/development/libraries/v8/build-standalone-static-library.patch
new file mode 100644
index 000000000000..994c322429d1
--- /dev/null
+++ b/nixpkgs/pkgs/development/libraries/v8/build-standalone-static-library.patch
@@ -0,0 +1,14 @@
+diff --git a/build/standalone.gypi b/build/standalone.gypi
+index b6519c4..ef9e7c5 100644
+--- a/build/standalone.gypi
++++ b/build/standalone.gypi
+@@ -373,6 +373,9 @@
+       }],
+     ],
+     'target_conditions': [
++      ['_type=="static_library"', {
++        'standalone_static_library': 1,
++      }],
+       ['v8_code == 0', {
+         'defines!': [
+           'DEBUG',
diff --git a/nixpkgs/pkgs/development/libraries/v8/default.nix b/nixpkgs/pkgs/development/libraries/v8/default.nix
new file mode 100644
index 000000000000..2b9fa5cc04c0
--- /dev/null
+++ b/nixpkgs/pkgs/development/libraries/v8/default.nix
@@ -0,0 +1,199 @@
+{ stdenv, lib, fetchgit, fetchFromGitHub, gyp, readline, python, which, icu
+, patchelf, coreutils, xcbuild
+, doCheck ? false
+, static ? false
+}:
+
+assert readline != null;
+
+let
+  arch = if stdenv.isx86_64 then "x64"
+            else if stdenv.isi686 then "ia32"
+            else if stdenv.isAarch64 then "arm64"
+            else if stdenv.isAarch32 then "arm"
+            else throw "Unknown architecture for v8";
+  git_url = "https://chromium.googlesource.com";
+  clangFlag = if stdenv.isDarwin then "1" else "0";
+  sharedFlag = if static then "static_library" else "shared_library";
+
+  deps = {
+    "build" = fetchgit {
+      url = "${git_url}/chromium/src/build.git";
+      rev = "2c67d4d74b6b3673228fab191918500a582ef3b0";
+      sha256 = "0jc7hci5yh792pw0ahjfxrk5xzllnlrv9llmwlgcgn2x8x6bn34q";
+    };
+    "tools/gyp" = fetchgit {
+      url = "${git_url}/external/gyp.git";
+      rev = "e7079f0e0e14108ab0dba58728ff219637458563";
+      sha256 = "0yd1ds13z0r9d2sb67f9i1gjn1zgzwyfv96qqqp6pn5pcfbialg6";
+    };
+    "third_party/icu" = fetchgit {
+      url = "${git_url}/chromium/deps/icu.git";
+      rev = "b5ecbb29a26532f72ef482569b223d5a51fd50bf";
+      sha256 = "0ld47wdnk8grcba221z67l3pnphv9zwifk4y44f5b946w3iwmpns";
+    };
+    "buildtools" = fetchgit {
+      url = "${git_url}/chromium/buildtools.git";
+      rev = "60f7f9a8b421ebf9a46041dfa2ff11c0fe59c582";
+      sha256 = "0i10bw7yhslklqwcx5krs3k05sicb73cpwd0mkaz96yxsvmkvjq0";
+    };
+    "base/trace_event/common" = fetchgit {
+      url = "${git_url}/chromium/src/base/trace_event/common.git";
+      rev = "315bf1e2d45be7d53346c31cfcc37424a32c30c8";
+      sha256 = "1pp2ygvp20j6g4868hrmiw0j704kdvsi9d9wx2gbk7w79rc36695";
+    };
+    "platform/inspector_protocol" = fetchgit {
+      url = "${git_url}/chromium/src/third_party/WebKit/Source/platform/inspector_protocol.git";
+      rev = "f49542089820a34a9a6e33264e09b73779407512";
+      sha256 = "1lwpass3p4rpp2kjmxxxpkqyv4lznxhf4i0yy7mmrd7jkpc7kn8k";
+    };
+    "tools/mb" = fetchgit {
+      url = "${git_url}/chromium/src/tools/mb.git";
+      rev = "0c4dc43c454f26936ddf3074ab8e9a41e3dc03a3";
+      sha256 = "0f96qphbmwn1pprv0a6xf68p01s1jzx2sz6pmadqbrs1dgh1xwnk";
+    };
+    "tools/swarming_client" = fetchgit {
+      url = "${git_url}/external/swarming.client.git";
+      rev = "7f63a272f7d9785ce41b6d10bb3106c49a968e57";
+      sha256 = "1pmb8bq4qifjf2dzz8c4jdwhlvwgrl9ycjaalcyh1sbh4lx3yvv2";
+    };
+    "testing/gtest" = fetchgit {
+      url = "${git_url}/external/github.com/google/googletest.git";
+      rev = "6f8a66431cb592dad629028a50b3dd418a408c87";
+      sha256 = "0bdba2lr6pg15bla9600zg0r0vm4lnrx0wqz84p376wfdxra24vw";
+    };
+    "testing/gmock" = fetchgit {
+      url = "${git_url}/external/googlemock.git";
+      rev = "0421b6f358139f02e102c9c332ce19a33faf75be";
+      sha256 = "1xiky4v98maxs8fg1avcd56y0alv3hw8qyrlpd899zgzbq2k10pp";
+    };
+    "test/benchmarks/data" = fetchgit {
+      url = "${git_url}/v8/deps/third_party/benchmarks.git";
+      rev = "05d7188267b4560491ff9155c5ee13e207ecd65f";
+      sha256 = "0ad2ay14bn67d61ks4dmzadfnhkj9bw28r4yjdjjyzck7qbnzchl";
+    };
+    "test/mozilla/data" = fetchgit {
+      url = "${git_url}/v8/deps/third_party/mozilla-tests.git";
+      rev = "f6c578a10ea707b1a8ab0b88943fe5115ce2b9be";
+      sha256 = "0rfdan76yfawqxbwwb35aa57b723j3z9fx5a2w16nls02yk2kqyn";
+    };
+    "test/simdjs/data" = fetchgit {
+      url = "${git_url}/external/github.com/tc39/ecmascript_simd.git";
+      rev = "baf493985cb9ea7cdbd0d68704860a8156de9556";
+      sha256 = "178r0k40a58c1187gfzqz2i6as34l8cliy1g1x870wyy0qcvlq2q";
+    };
+    "test/test262/data" = fetchgit {
+      url = "${git_url}/external/github.com/tc39/test262.git";
+      rev = "88bc7fe7586f161201c5f14f55c9c489f82b1b67";
+      sha256 = "0gc7fmaqrgwb6rl02jnrm3synpwzzg0dfqy3zm386r1qcisl93xs";
+    };
+    "test/test262/harness" = fetchgit {
+      url = "${git_url}/external/github.com/test262-utils/test262-harness-py.git";
+      rev = "cbd968f54f7a95c6556d53ba852292a4c49d11d8";
+      sha256 = "094c3600a4wh1m3fvvlivn290kik1pzzvwabq77lk8bh4jkkv7ki";
+    };
+    "tools/clang" = fetchgit {
+      url = "${git_url}/chromium/src/tools/clang.git";
+      rev = "496622ab4aaa5be7e5a9b80617013cb02f45dc87";
+      sha256 = "1gkhk2bzpxwzkirzcqfixxpprbr8mn6rk00krm25daarm3smydmf";
+    };
+  };
+
+in
+
+stdenv.mkDerivation rec {
+  name = "v8-${version}";
+  version = "5.4.232";
+
+  inherit doCheck;
+
+  src = fetchFromGitHub {
+    owner = "v8";
+    repo = "v8";
+    rev = version;
+    sha256 = "1nqxbkz75m8xrjih0sj3f3iqvif4192vxdaxzy8r787rihjwg9nx";
+  };
+
+  postUnpack = ''
+    ${lib.concatStringsSep "\n" (
+      lib.mapAttrsToList (n: v: ''
+        mkdir -p $sourceRoot/${n}
+        cp -r ${v}/* $sourceRoot/${n}
+      '') deps)}
+  '';
+
+  # Patch based off of:
+  # https://github.com/cowboyd/libv8/tree/v5.1.281.67.0/patches
+  patches = lib.optional (!doCheck) ./libv8-5.4.232.patch;
+
+  postPatch = ''
+    sed -i 's,#!/usr/bin/env python,#!${python}/bin/python,' gypfiles/gyp_v8
+    sed -i 's,/bin/echo,${coreutils}/bin/echo,' gypfiles/standalone.gypi
+    sed -i '/CR_CLANG_REVISION/ d' gypfiles/standalone.gypi
+    sed -i 's/-Wno-format-pedantic//g' gypfiles/standalone.gypi
+  '';
+
+  configurePhase = ''
+    PYTHONPATH="tools/generate_shim_headers:$PYTHONPATH" \
+    PYTHONPATH="$(toPythonPath ${gyp}):$PYTHONPATH" \
+      gypfiles/gyp_v8 \
+        -f make \
+        --generator-output="out" \
+        -Dflock_index=0 \
+        -Dclang=${clangFlag} \
+        -Dv8_enable_i18n_support=1 \
+        -Duse_system_icu=1 \
+        -Dcomponent=${sharedFlag} \
+        -Dconsole=readline \
+        -Dv8_target_arch=${arch} \
+        -Dv8_use_external_startup_data=0
+  '';
+
+  nativeBuildInputs = [ which ];
+  buildInputs = [ readline python icu ]
+    ++ stdenv.lib.optional stdenv.isDarwin xcbuild
+    ++ stdenv.lib.optional stdenv.isLinux patchelf;
+
+  NIX_CFLAGS_COMPILE = "-Wno-error=strict-overflow -Wno-error=unused-function -Wno-error=attributes"
+    + stdenv.lib.optionalString stdenv.cc.isClang " -Wno-error=unused-lambda-capture";
+
+  buildFlags = [
+    "LINK=c++"
+    "-C out"
+    "builddir=$(CURDIR)/Release"
+    "BUILDTYPE=Release"
+  ];
+
+  enableParallelBuilding = true;
+
+  dontUpdateAutotoolsGnuConfigScripts = if stdenv.isAarch64 then true else null;
+
+  # the `libv8_libplatform` target is _only_ built as a static library,
+  # and is expected to be statically linked in when needed.
+  # see the following link for further commentary:
+  # https://github.com/cowboyd/therubyracer/issues/391
+  installPhase = ''
+    install -vD out/Release/d8 "$out/bin/d8"
+    install -vD out/Release/mksnapshot "$out/bin/mksnapshot"
+    ${if static then ""
+    else if stdenv.isDarwin then ''
+    install -vD out/Release/libv8.dylib "$out/lib/libv8.dylib"
+    install_name_tool -change /usr/local/lib/libv8.dylib $out/lib/libv8.dylib -change /usr/lib/libgcc_s.1.dylib ${stdenv.cc.cc.lib}/lib/libgcc_s.1.dylib $out/bin/d8
+    install_name_tool -id $out/lib/libv8.dylib -change /usr/lib/libgcc_s.1.dylib ${stdenv.cc.cc.lib}/lib/libgcc_s.1.dylib $out/lib/libv8.dylib
+    '' else ''
+    install -vD out/Release/lib.target/libv8.so "$out/lib/libv8.so"
+    ''}
+    mkdir -p "$out/include"
+    cp -vr include/*.h "$out/include"
+    cp -vr include/libplatform "$out/include"
+    mkdir -p "$out/lib"
+    cp -v  out/Release/*.a "$out/lib"
+  '';
+
+  meta = with lib; {
+    description = "Google's open source JavaScript engine";
+    maintainers = with maintainers; [ cstrahan proglodyte ];
+    platforms = platforms.linux ++ platforms.darwin;
+    license = licenses.bsd3;
+  };
+}
diff --git a/nixpkgs/pkgs/development/libraries/v8/disable-building-tests.patch b/nixpkgs/pkgs/development/libraries/v8/disable-building-tests.patch
new file mode 100644
index 000000000000..1854a9b7e567
--- /dev/null
+++ b/nixpkgs/pkgs/development/libraries/v8/disable-building-tests.patch
@@ -0,0 +1,27 @@
+diff --git a/Makefile b/Makefile
+index 9761265..80169b2 100644
+--- a/Makefile
++++ b/Makefile
+@@ -248,8 +248,6 @@ NACL_ARCHES = nacl_ia32 nacl_x64
+ GYPFILES = third_party/icu/icu.gypi third_party/icu/icu.gyp \
+ 	   build/shim_headers.gypi build/features.gypi build/standalone.gypi \
+ 	   build/toolchain.gypi build/all.gyp build/mac/asan.gyp \
+-	   test/cctest/cctest.gyp \
+-	   test/unittests/unittests.gyp tools/gyp/v8.gyp \
+ 	   tools/parser-shell.gyp testing/gmock.gyp testing/gtest.gyp \
+ 	   buildtools/third_party/libc++abi/libc++abi.gyp \
+ 	   buildtools/third_party/libc++/libc++.gyp samples/samples.gyp \
+diff --git a/build/all.gyp b/build/all.gyp
+index 4aeb507..1ff2c7a 100644
+--- a/build/all.gyp
++++ b/build/all.gyp
+@@ -10,8 +10,6 @@
+       'dependencies': [
+         '../samples/samples.gyp:*',
+         '../src/d8.gyp:d8',
+-        '../test/cctest/cctest.gyp:*',
+-        '../test/unittests/unittests.gyp:*',
+       ],
+       'conditions': [
+         ['component!="shared_library"', {
+
diff --git a/nixpkgs/pkgs/development/libraries/v8/fPIC-for-static.patch b/nixpkgs/pkgs/development/libraries/v8/fPIC-for-static.patch
new file mode 100644
index 000000000000..39564772af86
--- /dev/null
+++ b/nixpkgs/pkgs/development/libraries/v8/fPIC-for-static.patch
@@ -0,0 +1,13 @@
+diff --git a/build/standalone.gypi b/build/standalone.gypi
+index 7670e5b..230518c 100644
+--- a/build/standalone.gypi
++++ b/build/standalone.gypi
+@@ -205,7 +205,7 @@
+           [ 'visibility=="hidden" and v8_enable_backtrace==0', {
+             'cflags': [ '-fvisibility=hidden' ],
+           }],
+-          [ 'component=="shared_library"', {
++          [ 'component=="shared_library" or component=="static_library" and (v8_target_arch=="x64" or v8_target_arch=="arm64")', {
+             'cflags': [ '-fPIC', ],
+           }],
+         ],
diff --git a/nixpkgs/pkgs/development/libraries/v8/libv8-5.4.232.patch b/nixpkgs/pkgs/development/libraries/v8/libv8-5.4.232.patch
new file mode 100644
index 000000000000..16c227cfe38d
--- /dev/null
+++ b/nixpkgs/pkgs/development/libraries/v8/libv8-5.4.232.patch
@@ -0,0 +1,97 @@
+From c9f42d1314c6026efcfcc01824f4e2fdfd05ebcf Mon Sep 17 00:00:00 2001
+From: Ben Sklaroff <bsklaroff@gmail.com>
+Date: Sat, 23 Jul 2016 18:16:55 -0400
+Subject: [PATCH] libv8-5.4.232
+
+---
+ Makefile                 |  5 +----
+ gypfiles/all.gyp         | 32 --------------------------------
+ gypfiles/standalone.gypi |  5 ++++-
+ 3 files changed, 5 insertions(+), 37 deletions(-)
+
+diff --git a/Makefile b/Makefile
+index 5ea5c58..d1b2d73 100644
+--- a/Makefile
++++ b/Makefile
+@@ -261,11 +261,8 @@ GYPFILES = third_party/icu/icu.gypi third_party/icu/icu.gyp \
+ 	   gypfiles/shim_headers.gypi gypfiles/features.gypi \
+            gypfiles/standalone.gypi \
+ 	   gypfiles/toolchain.gypi gypfiles/all.gyp gypfiles/mac/asan.gyp \
+-	   test/cctest/cctest.gyp test/fuzzer/fuzzer.gyp \
+-	   test/unittests/unittests.gyp src/v8.gyp \
+-	   tools/parser-shell.gyp testing/gmock.gyp testing/gtest.gyp \
+ 	   buildtools/third_party/libc++abi/libc++abi.gyp \
+-	   buildtools/third_party/libc++/libc++.gyp samples/samples.gyp \
++	   buildtools/third_party/libc++/libc++.gyp \
+ 	   src/third_party/vtune/v8vtune.gyp src/d8.gyp
+ 
+ # If vtunejit=on, the v8vtune.gyp will be appended.
+diff --git a/gypfiles/all.gyp b/gypfiles/all.gyp
+index ff1bea4..96820a0 100644
+--- a/gypfiles/all.gyp
++++ b/gypfiles/all.gyp
+@@ -16,38 +16,6 @@
+             '../tools/parser-shell.gyp:parser-shell',
+           ],
+         }],
+-        # These items don't compile for Android on Mac.
+-        ['host_os!="mac" or OS!="android"', {
+-          'dependencies': [
+-            '../samples/samples.gyp:*',
+-            '../test/cctest/cctest.gyp:*',
+-            '../test/fuzzer/fuzzer.gyp:*',
+-            '../test/unittests/unittests.gyp:*',
+-            ],
+-        }],
+-        ['test_isolation_mode != "noop"', {
+-          'dependencies': [
+-            '../test/bot_default.gyp:*',
+-            '../test/benchmarks/benchmarks.gyp:*',
+-            '../test/default.gyp:*',
+-            '../test/ignition.gyp:*',
+-            '../test/intl/intl.gyp:*',
+-            '../test/message/message.gyp:*',
+-            '../test/mjsunit/mjsunit.gyp:*',
+-            '../test/mozilla/mozilla.gyp:*',
+-            '../test/optimize_for_size.gyp:*',
+-            '../test/perf.gyp:*',
+-            '../test/preparser/preparser.gyp:*',
+-            '../test/simdjs/simdjs.gyp:*',
+-            '../test/test262/test262.gyp:*',
+-            '../test/webkit/webkit.gyp:*',
+-            '../tools/check-static-initializers.gyp:*',
+-            '../tools/gcmole/run_gcmole.gyp:*',
+-            '../tools/jsfunfuzz/jsfunfuzz.gyp:*',
+-            '../tools/run-deopt-fuzzer.gyp:*',
+-            '../tools/run-valgrind.gyp:*',
+-          ],
+-        }],
+       ]
+     }
+   ]
+diff --git a/gypfiles/standalone.gypi b/gypfiles/standalone.gypi
+index 89f06a0..a43976d 100644
+--- a/gypfiles/standalone.gypi
++++ b/gypfiles/standalone.gypi
+@@ -506,6 +506,9 @@
+       }],  # fastbuild!=0
+     ],
+     'target_conditions': [
++      ['_type=="static_library"', {
++        'standalone_static_library': 1,
++      }],
+       ['v8_code == 0', {
+         'defines!': [
+           'DEBUG',
+@@ -770,7 +773,7 @@
+           [ 'visibility=="hidden" and v8_enable_backtrace==0', {
+             'cflags': [ '-fvisibility=hidden' ],
+           }],
+-          [ 'component=="shared_library"', {
++          [ 'component=="shared_library" or component=="static_library" and (v8_target_arch=="x64" or v8_target_arch=="arm64" or v8_target_arch=="arm")', {
+             'cflags': [ '-fPIC', ],
+           }],
+           [ 'clang==0 and coverage==1', {
+-- 
+2.9.0
+
diff --git a/nixpkgs/pkgs/development/libraries/v8/plv8_6_x.nix b/nixpkgs/pkgs/development/libraries/v8/plv8_6_x.nix
new file mode 100644
index 000000000000..8d2276def705
--- /dev/null
+++ b/nixpkgs/pkgs/development/libraries/v8/plv8_6_x.nix
@@ -0,0 +1,187 @@
+# NOTE: this expression is NOT exported from the top-level of all-packages.nix,
+# it is exclusively used by the 'plv8' PostgreSQL extension, which requires a
+# very exact version.
+
+{ stdenv, lib, fetchgit, fetchFromGitHub, gn, ninja, python, glib, pkgconfig
+, doCheck ? false
+, snapshot ? true
+}:
+
+let
+  arch = if stdenv.isAarch32
+         then if stdenv.is64bit
+              then"arm64"
+              else "arm"
+         else if stdenv.is64bit
+              then"x64"
+              else "ia32";
+  git_url = "https://chromium.googlesource.com";
+
+  # This data is from the DEPS file in the root of a V8 checkout
+  deps = {
+    "base/trace_event/common" = fetchgit {
+      url    = "${git_url}/chromium/src/base/trace_event/common.git";
+      rev    = "0e9a47d74970bee1bbfc063c47215406f8918699";
+      sha256 = "07rbzrlscp8adh4z86yl5jxdnvgkc3xs950xldpk318wf9i3bh6c";
+    };
+    "build" = fetchgit {
+      url    = "${git_url}/chromium/src/build.git";
+      rev    = "9338ce52d0b9bcef34c38285fbd5023b62739fac";
+      sha256 = "1s2sa8dy3waidsirjylc82ggb18l1108bczjc8z0v4ywyj4k0cvh";
+    };
+    "buildtools" = fetchgit {
+      url    = "${git_url}/chromium/buildtools.git";
+      rev    = "505de88083136eefd056e5ee4ca0f01fe9b33de8";
+      sha256 = "0vj216nhb803bggsl0hnyagj8njrm96pn8sim6xcnqb7nhz1vabw";
+    };
+    "test/benchmarks/data" = fetchgit {
+      url    = "${git_url}/v8/deps/third_party/benchmarks.git";
+      rev    = "05d7188267b4560491ff9155c5ee13e207ecd65f";
+      sha256 = "0ad2ay14bn67d61ks4dmzadfnhkj9bw28r4yjdjjyzck7qbnzchl";
+    };
+    "test/mozilla/data" = fetchgit {
+      url    = "${git_url}/v8/deps/third_party/mozilla-tests.git";
+      rev    = "f6c578a10ea707b1a8ab0b88943fe5115ce2b9be";
+      sha256 = "0rfdan76yfawqxbwwb35aa57b723j3z9fx5a2w16nls02yk2kqyn";
+    };
+    "test/test262/data" = fetchgit {
+      url    = "${git_url}/external/github.com/tc39/test262.git";
+      rev    = "5d4c667b271a9b39d0de73aef5ffe6879c6f8811";
+      sha256 = "0q9iwb2nkybf9np95wgf5m372aw2lhx9wlsw41a2a80kbkvb2kqg";
+    };
+    "test/test262/harness" = fetchgit {
+      url    = "${git_url}/external/github.com/test262-utils/test262-harness-py.git";
+      rev    = "0f2acdd882c84cff43b9d60df7574a1901e2cdcd";
+      sha256 = "00brj5avp43yamc92kinba2mg3a2x1rcd7wnm7z093l73idprvkp";
+    };
+    "test/wasm-js" = fetchgit {
+      url    = "${git_url}/external/github.com/WebAssembly/spec.git";
+      rev    = "a7e226a92e660a3d5413cfea4269824f513259d2";
+      sha256 = "0z3aybj3ykajwh2bv5fwd6pwqjjsq8dnwrqc2wncb6r9xcjwbgxp";
+    };
+    "testing/gtest" = fetchgit {
+      url    = "${git_url}/external/github.com/google/googletest.git";
+      rev    = "6f8a66431cb592dad629028a50b3dd418a408c87";
+      sha256 = "0bdba2lr6pg15bla9600zg0r0vm4lnrx0wqz84p376wfdxra24vw";
+    };
+    "third_party/icu" = fetchgit {
+      url    = "${git_url}/chromium/deps/icu.git";
+      rev    = "741688ebf328da9adc52505248bf4e2ef868722c";
+      sha256 = "02ifm18qjlrkn5nm2rxkf9yz9bdlyq7c65jfjndv63vi1drqh1r9";
+    };
+    "third_party/instrumented_libraries" = fetchgit {
+      url    = "${git_url}/chromium/src/third_party/instrumented_libraries.git";
+      rev    = "28417458ac4dc79f68915079d0f283f682504cc0";
+      sha256 = "1qf5c2946n37p843yriv7xawi6ss6samabghq43s49cgd4wq8dc3";
+    };
+    "third_party/jinja2" = fetchgit {
+      url    = "${git_url}/chromium/src/third_party/jinja2.git";
+      rev    = "d34383206fa42d52faa10bb9931d6d538f3a57e0";
+      sha256 = "0d9hyw0bvp3p0dbwy833cm9vdqxcam0qbm9jc561ynphddxlkmgd";
+    };
+    "third_party/markupsafe" = fetchgit {
+      url    = "${git_url}/chromium/src/third_party/markupsafe.git";
+      rev    = "8f45f5cfa0009d2a70589bcda0349b8cb2b72783";
+      sha256 = "168ppjmicfdh4i1l0l25s86mdbrz9fgxmiq1rx33x79mph41scfz";
+    };
+    "tools/clang" = fetchgit {
+      url    = "${git_url}/chromium/src/tools/clang.git";
+      rev    = "8688d267571de76a56746324dcc249bf4232b85a";
+      sha256 = "0krq4zz1vnwp064bm517gwr2napy18wyccdh8w5s4qgkjwwxd63s";
+    };
+    "tools/gyp" = fetchgit {
+      url    = "${git_url}/external/gyp.git";
+      rev    = "d61a9397e668fa9843c4aa7da9e79460fe590bfb";
+      sha256 = "1z081h72mjy285jb1kj5xd0pb4p12n9blvsimsavyn3ldmswv0r0";
+    };
+    "tools/luci-go" = fetchgit {
+      url    = "${git_url}/chromium/src/tools/luci-go.git";
+      rev    = "45a8a51fda92e123619a69e7644d9c64a320b0c1";
+      sha256 = "0r7736gqk7r0i7ig0b5ib10d9q8a8xzsmc0f0fbkm9k78v847vpj";
+    };
+    "tools/swarming_client" = fetchgit {
+      url    = "${git_url}/infra/luci/client-py.git";
+      rev    = "4bd9152f8a975d57c972c071dfb4ddf668e02200";
+      sha256 = "03zk91gzvqv01g1vbl8d7h8al7vs4ymrrdc8ipg9wpq52yh65smh";
+    };
+  };
+
+in
+
+stdenv.mkDerivation rec {
+  name = "v8-${version}";
+  version = "6.4.388.40";
+
+  inherit doCheck;
+
+  src = fetchFromGitHub {
+    owner = "v8";
+    repo = "v8";
+    rev = version;
+    sha256 = "1lq239cgqyidrynz8g3wbdv70ymzv6s0ppad8s219gb3jnizm16a";
+  };
+
+  postUnpack = ''
+    ${lib.concatStringsSep "\n" (
+      lib.mapAttrsToList (n: v: ''
+        mkdir -p $sourceRoot/${n}
+        cp -r ${v}/* $sourceRoot/${n}
+      '') deps)}
+  '';
+
+  prePatch = ''
+    # use our gn, not the bundled one
+    sed -i -e 's#gn_path = .*#gn_path = "${gn}/bin/gn"#' tools/mb/mb.py
+
+    # disable tests
+    if [ "$doCheck" = "" ]; then sed -i -e '/"test:gn_all",/d' BUILD.gn; fi
+
+    # disable sysroot usage
+    chmod u+w build/config build/config/sysroot.gni
+    sed -i build/config/sysroot.gni \
+        -e '/use_sysroot =/ { s#\(use_sysroot =\).*#\1 false#; :a  n; /current_cpu/ { s/^/#/; ba };  }'
+
+    # patch shebangs (/usr/bin/env)
+    patchShebangs tools/dev/v8gen.py
+  '';
+
+  configurePhase = ''
+    tools/dev/v8gen.py -vv ${arch}.release -- \
+        is_component_build=true               \
+        ${if snapshot then "v8_use_external_startup_data=false" else "v8_use_snapshot=false"} \
+        is_clang=false                        \
+        linux_use_bundled_binutils=false      \
+        treat_warnings_as_errors=false        \
+        use_custom_libcxx=false               \
+        use_custom_libcxx_for_host=false
+  '';
+
+  nativeBuildInputs = [ gn ninja pkgconfig ];
+  buildInputs = [ python glib ];
+
+  buildPhase = ''
+    ninja -C out.gn/${arch}.release/
+  '';
+
+  enableParallelBuilding = true;
+
+  installPhase = ''
+    install -vD out.gn/${arch}.release/d8 "$out/bin/d8"
+    install -vD out.gn/${arch}.release/mksnapshot "$out/bin/mksnapshot"
+    mkdir -p "$out/lib"
+    for f in libicui18n.so libicuuc.so libv8_libbase.so libv8_libplatform.so libv8.so; do
+        install -vD out.gn/${arch}.release/$f "$out/lib/$f"
+    done
+    install -vD out.gn/${arch}.release/icudtl.dat "$out/lib/icudtl.dat"
+    mkdir -p "$out/include"
+    cp -vr include/*.h "$out/include"
+    cp -vr include/libplatform "$out/include"
+  '';
+
+  meta = with lib; {
+    description = "Google's open source JavaScript engine";
+    maintainers = with maintainers; [ cstrahan proglodyte ];
+    platforms = platforms.linux;
+    license = licenses.bsd3;
+  };
+}
diff --git a/nixpkgs/pkgs/development/libraries/v8/update.sh b/nixpkgs/pkgs/development/libraries/v8/update.sh
new file mode 100755
index 000000000000..f046bb8e6885
--- /dev/null
+++ b/nixpkgs/pkgs/development/libraries/v8/update.sh
@@ -0,0 +1,47 @@
+#!/usr/bin/env nix-shell
+#! nix-shell -i bash -p curl -p nix-prefetch-git
+VERSION_OVERVIEW=https://omahaproxy.appspot.com/all?os=linux
+TARGET_CHANNEL=beta
+FILE_PATH=6_x.nix
+
+set -eo pipefail
+
+v8_version=$(curl -s "$VERSION_OVERVIEW" | awk -F "," "\$2 ~ /${TARGET_CHANNEL}/ { print \$11 }")
+
+echo "Using V8 version --> $v8_version"
+sed -e "s#\\(version = \\)\"[0-9\.]*\"#\1\"$v8_version\"#" -i ${FILE_PATH}
+
+sha256=$(nix-prefetch-git --no-deepClone https://github.com/v8/v8.git "refs/tags/${v8_version}" \
+    | sed -ne '/sha256/ { s#.*: "\(.*\)".*#\1#; p }')
+sed -e "/repo = \"v8\"/ { n;n; s#\".*\"#\"${sha256}\"# }" -i ${FILE_PATH}
+
+deps="$(mktemp)"
+
+curl -s -o "$deps" "https://raw.githubusercontent.com/v8/v8/${v8_version}/DEPS"
+echo $deps
+
+sed -ne '/= fetchgit {/ { s/.*"\(.*\)".*/\1/; p }' < ${FILE_PATH} | while read dep; do
+    echo "Processing dependency --> $dep"
+    escaped_dep=$(echo "$dep" | sed -e 's#/#\\/#g')
+    dep_rev=$(sed -ne "/\"v8\/${escaped_dep}\":/ { n; s#.*+ \"##; s#\".*##;  p }" "$deps")
+
+    if [ "$dep_rev" = "" ]; then
+        echo "Failed to resolve dependency $dep, not listed in DEPS file"
+        rm -f "$deps"
+        exit 2
+    fi
+
+    repo_url=$(sed -ne "/\"${escaped_dep}\" = fetchgit/ { n; s/.*\"\(.*\)\".*/\1/; s#\${git_url}#https://chromium.googlesource.com#; p }"  ${FILE_PATH})
+    sha256=$(nix-prefetch-git --no-deepClone "$repo_url" "$dep_rev" 2>/dev/null | sed -ne '/sha256/ { s#.*: "\(.*\)".*#\1#; p }')
+
+    if [ "$sha256" = "" ]; then
+        echo "Failed to get sha256 via nix-prefetch-git $repo_url $dep_rev"
+        rm -f "$deps"
+        exit 2
+    fi
+
+    sed -e "/\"${escaped_dep}\" = fetchgit/ { n; n; s/\".*\"/\"${dep_rev}\"/; n; s/\".*\"/\"${sha256}\"/  }" -i ${FILE_PATH}
+done
+
+rm -f "$deps"
+echo done.