Merge pull request #81633 from andir/bazel_0_fix_tensorflow

Tensorflow: fix #77626

6 files changed, 482 insertions, 219 deletions

diff --git a/pkgs/development/python-modules/tensorflow/default.nix b/pkgs/development/python-modules/tensorflow/default.nix
index cdf659a74dc7..0cddbd5a0a49 100644
--- a/pkgs/development/python-modules/tensorflow/default.nix
+++ b/pkgs/development/python-modules/tensorflow/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, pkgs, bazel_1, buildBazelPackage, lib, fetchFromGitHub, fetchpatch, symlinkJoin
+{ stdenv, pkgs, bazel_0, buildBazelPackage, lib, fetchFromGitHub, fetchpatch, symlinkJoin
 , addOpenGLRunpath
 # Python deps
 , buildPythonPackage, isPy3k, pythonOlder, pythonAtLeast, python
@@ -94,7 +94,7 @@ let
 
   bazel-build = buildBazelPackage {
     name = "${pname}-${version}";
-    bazel = bazel_1;
+    bazel = bazel_0;
 
     src = fetchFromGitHub {
       owner = "tensorflow";
@@ -121,7 +121,6 @@ let
         sha256 = "1n9ypbrx36fc1kc9cz5b3p9qhg15xxhq4nz6ap3hwqba535nakfz";
       })
 
-      ./tf-1.15-bazel-1.0.patch
 
       (fetchpatch {
         # be compatible with gast >0.2 instead of only gast 0.2.2
@@ -283,7 +282,6 @@ let
     bazelFlags = [
       # temporary fixes to make the build work with bazel 0.27
       "--incompatible_no_support_tools_in_action_inputs=false"
-      "--incompatible_use_native_patch=false"
     ];
     bazelBuildFlags = [
       "--config=opt" # optimize using the flags set in the configure phase
@@ -299,9 +297,9 @@ let
       # FIXME: can't (re)produce this output with current bazel.
       # FIXME: build log: https://gist.github.com/andir/eff3e9c8eda5b56c8ea84903aed9cc35
       sha256 = if cudaSupport then
-        "0gyhjvzshgj59mbns8njlfl9qpz4sdg4j0xs2dva0w2nql7cr7im"
+        "0bzkqjnw1crf0v91yb1frvy0l7kmjawbfwdhm89h73i8fqjab8jw"
       else
-        "04jvg3mc2si4xdbszc1vnw1rmf22p7snbjphmnklp7bc39jxkcrz";
+        "1d7czp43a3a4aksvdcskbdy7dgifily1amqbz9fa6d8mkhdj5if5";
     };
 
     buildAttrs = {
@@ -422,6 +420,9 @@ in buildPythonPackage {
     x = np.random.uniform(size=(1,1))
     y = np.random.uniform(size=(1,))
     model.fit(x, y, epochs=1)
+
+    # regression test for #77626
+    from tensorflow.contrib import tensor_forest
     EOF
   '';
 
diff --git a/pkgs/development/python-modules/tensorflow/tf-1.15-bazel-1.0.patch b/pkgs/development/python-modules/tensorflow/tf-1.15-bazel-1.0.patch
deleted file mode 100644
index 4d70e99108bf..000000000000
--- a/pkgs/development/python-modules/tensorflow/tf-1.15-bazel-1.0.patch
+++ /dev/null
@@ -1,213 +0,0 @@
-diff --git a/tensorflow/c/BUILD b/tensorflow/c/BUILD
-index f740ba66b5..6cc9003787 100644
---- a/tensorflow/c/BUILD
-+++ b/tensorflow/c/BUILD
-@@ -270,6 +270,7 @@ tf_cuda_library(
-         "//tensorflow/core/platform",
-         "@com_google_absl//absl/strings",
-     ],
-+    alwayslink = 1,
- )
- 
- exports_files(
-diff --git a/tensorflow/c/eager/BUILD b/tensorflow/c/eager/BUILD
-index 5c42e508f7..16b421862c 100644
---- a/tensorflow/c/eager/BUILD
-+++ b/tensorflow/c/eager/BUILD
-@@ -79,6 +79,7 @@ tf_cuda_library(
-         "//tensorflow/core/profiler/lib:profiler_session",
-         "//tensorflow/core:gpu_runtime",
-     ],
-+    alwayslink = 1,
- )
- 
- tf_cuda_library(
-@@ -226,6 +227,7 @@ tf_cuda_library(
-         "//tensorflow/core/profiler/rpc/client:capture_profile",
-         "//tensorflow/core:gpu_runtime",
-     ],
-+    alwayslink = 1,
- )
- 
- tf_cuda_cc_test(
-diff --git a/tensorflow/cc/saved_model/BUILD b/tensorflow/cc/saved_model/BUILD
-index 39b84922d1..b2affdd999 100644
---- a/tensorflow/cc/saved_model/BUILD
-+++ b/tensorflow/cc/saved_model/BUILD
-@@ -123,6 +123,7 @@ cc_library(
-         "//tensorflow/core/util/tensor_bundle:naming",
-         # mobile not supported yet
-     ]),
-+    alwayslink = 1,
- )
- 
- tf_cc_test(
-diff --git a/tensorflow/core/BUILD b/tensorflow/core/BUILD
-index c23c1f9b39..805643b217 100644
---- a/tensorflow/core/BUILD
-+++ b/tensorflow/core/BUILD
-@@ -777,6 +777,7 @@ cc_library(
-         ":lib_proto_parsing",
-         ":protos_all_cc",
-     ],
-+    alwayslink = 1,
- )
- 
- # DEPRECATED: use platform:stringpiece instead.
-@@ -2496,6 +2497,7 @@ cc_library(
-                "@com_google_protobuf//:protobuf",
-            ] + tf_protos_all_impl() + tf_protos_grappler_impl() +
-            tf_additional_numa_deps(),
-+    alwayslink = 1,
- )
- 
- # File compiled with extra flags to get cpu-specific acceleration.
-diff --git a/tensorflow/core/lib/random/BUILD b/tensorflow/core/lib/random/BUILD
-index 3bd933261b..e1e589e76d 100644
---- a/tensorflow/core/lib/random/BUILD
-+++ b/tensorflow/core/lib/random/BUILD
-@@ -50,6 +50,7 @@ cc_library(
-         "//tensorflow/core/platform:types",
-         "//third_party/eigen3",
-     ],
-+    alwayslink = 1,
- )
- 
- filegroup(
-diff --git a/tensorflow/core/platform/default/build_config.bzl b/tensorflow/core/platform/default/build_config.bzl
-index 5459d8d428..feba3a5686 100644
---- a/tensorflow/core/platform/default/build_config.bzl
-+++ b/tensorflow/core/platform/default/build_config.bzl
-@@ -228,6 +228,7 @@ def cc_proto_library(
-         hdrs = gen_hdrs,
-         deps = cc_libs + deps,
-         includes = includes,
-+        alwayslink = 1,
-         **kargs
-     )
-     native.cc_library(
-diff --git a/tensorflow/lite/java/src/test/native/BUILD b/tensorflow/lite/java/src/test/native/BUILD
-index 6dcdab2aee..32bb0a8d85 100644
---- a/tensorflow/lite/java/src/test/native/BUILD
-+++ b/tensorflow/lite/java/src/test/native/BUILD
-@@ -19,6 +19,7 @@ cc_library(
-         "//tensorflow/lite/java/jni",
-         "//tensorflow/lite/kernels:kernel_util",
-     ],
-+    alwayslink = 1,
- )
- 
- tflite_jni_binary(
-diff --git a/tensorflow/lite/python/testdata/BUILD b/tensorflow/lite/python/testdata/BUILD
-index 7bda81358f..ac1188d844 100644
---- a/tensorflow/lite/python/testdata/BUILD
-+++ b/tensorflow/lite/python/testdata/BUILD
-@@ -60,6 +60,7 @@ cc_library(
-     deps = [
-         "//tensorflow/lite/c:c_api_internal",
-     ],
-+    alwayslink = 1,
- )
- 
- cc_binary(
-diff --git a/tensorflow/python/BUILD b/tensorflow/python/BUILD
-index 6fd9b4f273..29df3a3dff 100644
---- a/tensorflow/python/BUILD
-+++ b/tensorflow/python/BUILD
-@@ -375,6 +375,7 @@ cc_library(
-         "//tensorflow/core:lib",
-         "//tensorflow/core:protos_all_cc",
-     ],
-+    alwayslink = 1,
- )
- 
- cc_library(
-@@ -411,6 +412,7 @@ cc_library(
-         "//third_party/py/numpy:headers",
-         "//third_party/python_runtime:headers",
-     ],
-+    alwayslink = 1,
- )
- 
- cc_library(
-@@ -617,6 +619,7 @@ cc_library(
-         "//tensorflow/core:op_gen_lib",
-         "//tensorflow/core:protos_all_cc",
-     ],
-+    alwayslink = 1,
- )
- 
- py_library(
-diff --git a/tensorflow/tensorflow.bzl b/tensorflow/tensorflow.bzl
-index a3956322fe..32752f59ad 100644
---- a/tensorflow/tensorflow.bzl
-+++ b/tensorflow/tensorflow.bzl
-@@ -2331,6 +2331,7 @@ def tf_generate_proto_text_sources(name, srcs_relative_dir, srcs, protodeps = []
-         hdrs = out_hdrs,
-         visibility = visibility,
-         deps = deps,
-+        alwayslink = 1,
-     )
- 
- def tf_genrule_cmd_append_to_srcs(to_append):
-diff --git a/tensorflow/tools/graph_transforms/BUILD b/tensorflow/tools/graph_transforms/BUILD
-index adafe2aca1..8965316b12 100644
---- a/tensorflow/tools/graph_transforms/BUILD
-+++ b/tensorflow/tools/graph_transforms/BUILD
-@@ -223,6 +223,7 @@ cc_library(
-         "//tensorflow/core:lib_internal",
-         "//tensorflow/core:protos_all_cc",
-     ],
-+    alwayslink = 1,
- )
- 
- # This library includes a main function, to make it easy to create other
-diff --git a/third_party/icu/data/BUILD.bazel b/third_party/icu/data/BUILD.bazel
-index 7db21566e4..8e18c7cc3a 100644
---- a/third_party/icu/data/BUILD.bazel
-+++ b/third_party/icu/data/BUILD.bazel
-@@ -43,4 +43,5 @@ cc_library(
-     name = "conversion_data",
-     srcs = [":conversion_data.c"],
-     deps = ["@icu//:headers"],
-+    alwayslink = 1,
- )
-diff --git a/third_party/protobuf/protobuf.patch b/third_party/protobuf/protobuf.patch
-index df0648563d..18fc6cdf35 100644
---- a/third_party/protobuf/protobuf.patch
-+++ b/third_party/protobuf/protobuf.patch
-@@ -11,7 +11,15 @@ index 2fb26050..c2744d5b 100644
-  
-  ################################################################################
-  # Protobuf Runtime Library
--@@ -218,7 +218,7 @@ cc_library(
-+@@ -209,6 +209,7 @@ cc_library(
-+     copts = COPTS,
-+     includes = ["src/"],
-+     linkopts = LINK_OPTS,
-++    alwayslink = 1,
-+     visibility = ["//visibility:public"],
-+     deps = [":protobuf_lite"] + PROTOBUF_DEPS,
-+ )
-+@@ -219,7 +220,7 @@ cc_library(
-  # TODO(keveman): Remove this target once the support gets added to Bazel.
-  cc_library(
-      name = "protobuf_headers",
-@@ -20,3 +28,4 @@ index 2fb26050..c2744d5b 100644
-      includes = ["src/"],
-      visibility = ["//visibility:public"],
-  )
-+ 
-\ No newline at end of file
-diff --git a/third_party/systemlibs/protobuf.bzl b/third_party/systemlibs/protobuf.bzl
-index 774514f3fd..1c415b018b 100644
---- a/third_party/systemlibs/protobuf.bzl
-+++ b/third_party/systemlibs/protobuf.bzl
-@@ -262,6 +262,7 @@ def cc_proto_library(
-         hdrs = gen_hdrs,
-         deps = cc_libs + deps,
-         includes = includes,
-+        alwayslink = 1,
-         **kargs
-     )
- 
diff --git a/pkgs/development/tools/build-managers/bazel/bazel_0/default.nix b/pkgs/development/tools/build-managers/bazel/bazel_0/default.nix
new file mode 100644
index 000000000000..f54868de533c
--- /dev/null
+++ b/pkgs/development/tools/build-managers/bazel/bazel_0/default.nix
@@ -0,0 +1,375 @@
+{ stdenv, callPackage, lib, fetchurl, fetchpatch, runCommand, makeWrapper
+, zip, unzip, bash, writeCBin, coreutils
+, which, python, perl, gawk, gnused, gnutar, gnugrep, gzip, findutils
+# Apple dependencies
+, cctools, clang, libcxx, CoreFoundation, CoreServices, Foundation
+# Allow to independently override the jdks used to build and run respectively
+, buildJdk, runJdk
+, buildJdkName
+, runtimeShell
+# Always assume all markers valid (don't redownload dependencies).
+# Also, don't clean up environment variables.
+, enableNixHacks ? false
+}:
+
+let
+  srcDeps = [
+    # From: $REPO_ROOT/WORKSPACE
+    (fetchurl {
+      url = "https://github.com/google/desugar_jdk_libs/archive/915f566d1dc23bc5a8975320cd2ff71be108eb9c.zip";
+      sha256 = "0b926df7yxyyyiwm9cmdijy6kplf0sghm23sf163zh8wrk87wfi7";
+    })
+    (fetchurl {
+        url = "https://mirror.bazel.build/github.com/bazelbuild/skydoc/archive/2d9566b21fbe405acf5f7bf77eda30df72a4744c.tar.gz";
+        sha256 = "4a1318fed4831697b83ce879b3ab70ae09592b167e5bda8edaff45132d1c3b3f";
+    })
+    (fetchurl {
+        url = "https://mirror.bazel.build/github.com/bazelbuild/bazel-skylib/archive/f83cb8dd6f5658bc574ccd873e25197055265d1c.tar.gz";
+        sha256 = "ba5d15ca230efca96320085d8e4d58da826d1f81b444ef8afccd8b23e0799b52";
+    })
+    (fetchurl {
+      url = "https://mirror.bazel.build/github.com/bazelbuild/rules_sass/archive/8ccf4f1c351928b55d5dddf3672e3667f6978d60.tar.gz";
+      sha256 = "d868ce50d592ef4aad7dec4dd32ae68d2151261913450fac8390b3fd474bb898";
+    })
+     (fetchurl {
+         url = "https://mirror.bazel.build/bazel_java_tools/releases/javac10/v3.1/java_tools_javac10_linux-v3.1.zip";
+         sha256 = "a0cd51f9db1bf05a722ff7f5c60a07fa1c7d27428fff0815c342d32aa6c53576";
+     })
+    (fetchurl {
+        url = "https://mirror.bazel.build/bazel_java_tools/releases/javac10/v3.1/java_tools_javac10_darwin-v3.1.zip";
+        sha256 = "c646aad8808b8ec5844d6a80a1287fc8e13203375fe40d6af4819eff48b9bbaf";
+    })
+    (fetchurl {
+        url = "https://mirror.bazel.build/bazel_coverage_output_generator/releases/coverage_output_generator-v1.0.zip";
+        sha256 = "cc470e529fafb6165b5be3929ff2d99b38429b386ac100878687416603a67889";
+    })
+    (fetchurl {
+        url = "https://github.com/bazelbuild/rules_nodejs/archive/0.16.2.zip";
+        sha256 = "9b72bb0aea72d7cbcfc82a01b1e25bf3d85f791e790ddec16c65e2d906382ee0";
+    })
+    (fetchurl {
+        url = "https://mirror.bazel.build/bazel_android_tools/android_tools_pkg-0.2.tar.gz";
+        sha256 = "04f85f2dd049e87805511e3babc5cea3f5e72332b1627e34f3a5461cc38e815f";
+    })
+  ];
+
+  distDir = runCommand "bazel-deps" {} ''
+    mkdir -p $out
+    for i in ${builtins.toString srcDeps}; do cp $i $out/$(stripHash $i); done
+  '';
+
+  defaultShellPath = lib.makeBinPath
+    # Keep this list conservative. For more exotic tools, prefer to use
+    # @rules_nixpkgs to pull in tools from the nix repository. Example:
+    #
+    # WORKSPACE:
+    #
+    #     nixpkgs_git_repository(
+    #         name = "nixpkgs",
+    #         revision = "def5124ec8367efdba95a99523dd06d918cb0ae8",
+    #     )
+    #
+    #     # This defines an external Bazel workspace.
+    #     nixpkgs_package(
+    #         name = "bison",
+    #         repositories = { "nixpkgs": "@nixpkgs//:default.nix" },
+    #     )
+    #
+    # some/BUILD.bazel:
+    #
+    #     genrule(
+    #        ...
+    #        cmd = "$(location @bison//:bin/bison) -other -args",
+    #        tools = [
+    #            ...
+    #            "@bison//:bin/bison",
+    #        ],
+    #     )
+    #
+    [ bash coreutils findutils gawk gnugrep gnutar gnused gzip which unzip ];
+
+  # Java toolchain used for the build and tests
+  javaToolchain = "@bazel_tools//tools/jdk:toolchain_host${buildJdkName}";
+
+in
+stdenv.mkDerivation rec {
+
+  version = "0.26.0";
+
+  meta = with lib; {
+    homepage = "https://github.com/bazelbuild/bazel/";
+    description = "Build tool that builds code quickly and reliably";
+    license = licenses.asl20;
+    platforms = platforms.linux ++ platforms.darwin;
+  };
+
+  # Additional tests that check bazel’s functionality. Execute
+  #
+  #     nix-build . -A bazel.tests
+  #
+  # in the nixpkgs checkout root to exercise them locally.
+  passthru.tests = {
+    pythonBinPath = callPackage ./python-bin-path-test.nix {};
+    bashTools = callPackage ./bash-tools-test.nix {};
+  };
+
+  name = "bazel-${version}";
+
+  src = fetchurl {
+    url = "https://github.com/bazelbuild/bazel/releases/download/${version}/${name}-dist.zip";
+    sha256 = "d26dadf62959255d58e523da3448a6222af768fe1224e321b120c1d5bbe4b4f2";
+  };
+
+  # Necessary for the tests to pass on Darwin with sandbox enabled.
+  # Bazel starts a local server and needs to bind a local address.
+  __darwinAllowLocalNetworking = true;
+
+  sourceRoot = ".";
+
+  patches = [
+    ./glibc.patch
+    ./python-stub-path-fix.patch
+  ] ++ lib.optional enableNixHacks ../nix-hacks.patch;
+
+  # Bazel expects several utils to be available in Bash even without PATH. Hence this hack.
+
+  customBash = writeCBin "bash" ''
+    #include <stdio.h>
+    #include <stdlib.h>
+    #include <string.h>
+    #include <unistd.h>
+
+    extern char **environ;
+
+    int main(int argc, char *argv[]) {
+      char *path = getenv("PATH");
+      char *pathToAppend = "${defaultShellPath}";
+      char *newPath;
+      if (path != NULL) {
+        int length = strlen(path) + 1 + strlen(pathToAppend) + 1;
+        newPath = malloc(length * sizeof(char));
+        snprintf(newPath, length, "%s:%s", path, pathToAppend);
+      } else {
+        newPath = pathToAppend;
+      }
+      setenv("PATH", newPath, 1);
+      execve("${bash}/bin/bash", argv, environ);
+      return 0;
+    }
+  '';
+
+  postPatch = let
+
+    darwinPatches = ''
+      # Disable Bazel's Xcode toolchain detection which would configure compilers
+      # and linkers from Xcode instead of from PATH
+      export BAZEL_USE_CPP_ONLY_TOOLCHAIN=1
+
+      # Explicitly configure gcov since we don't have it on Darwin, so autodetection fails
+      export GCOV=${coreutils}/bin/false
+
+      # Framework search paths aren't added by bintools hook
+      # https://github.com/NixOS/nixpkgs/pull/41914
+      export NIX_LDFLAGS="$NIX_LDFLAGS -F${CoreFoundation}/Library/Frameworks -F${CoreServices}/Library/Frameworks -F${Foundation}/Library/Frameworks"
+
+      # libcxx includes aren't added by libcxx hook
+      # https://github.com/NixOS/nixpkgs/pull/41589
+      export NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE -isystem ${libcxx}/include/c++/v1"
+
+      # don't use system installed Xcode to run clang, use Nix clang instead
+      sed -i -e "s;/usr/bin/xcrun clang;${stdenv.cc}/bin/clang $NIX_CFLAGS_COMPILE $NIX_LDFLAGS -framework CoreFoundation;g" \
+        scripts/bootstrap/compile.sh \
+        src/tools/xcode/realpath/BUILD \
+        src/tools/xcode/stdredirect/BUILD \
+        tools/osx/BUILD
+
+      # nixpkgs's libSystem cannot use pthread headers directly, must import GCD headers instead
+      sed -i -e "/#include <pthread\/spawn.h>/i #include <dispatch/dispatch.h>" src/main/cpp/blaze_util_darwin.cc
+
+      # clang installed from Xcode has a compatibility wrapper that forwards
+      # invocations of gcc to clang, but vanilla clang doesn't
+      sed -i -e 's;_find_generic(repository_ctx, "gcc", "CC", overriden_tools);_find_generic(repository_ctx, "clang", "CC", overriden_tools);g' tools/cpp/unix_cc_configure.bzl
+
+      sed -i -e 's;/usr/bin/libtool;${cctools}/bin/libtool;g' tools/cpp/unix_cc_configure.bzl
+      wrappers=( tools/cpp/osx_cc_wrapper.sh tools/cpp/osx_cc_wrapper.sh.tpl )
+      for wrapper in "''${wrappers[@]}"; do
+        sed -i -e "s,/usr/bin/install_name_tool,${cctools}/bin/install_name_tool,g" $wrapper
+      done
+    '';
+
+    genericPatches = ''
+      # Substitute python's stub shebang to plain python path. (see TODO add pr URL)
+      # See also `postFixup` where python is added to $out/nix-support
+      substituteInPlace src/main/java/com/google/devtools/build/lib/bazel/rules/python/python_stub_template.txt\
+          --replace "/usr/bin/env python" "${python}/bin/python" \
+          --replace "NIX_STORE_PYTHON_PATH" "${python}/bin/python" \
+
+      # md5sum is part of coreutils
+      sed -i 's|/sbin/md5|md5sum|' \
+        src/BUILD
+
+      # substituteInPlace is rather slow, so prefilter the files with grep
+      grep -rlZ /bin src/main/java/com/google/devtools | while IFS="" read -r -d "" path; do
+        # If you add more replacements here, you must change the grep above!
+        # Only files containing /bin are taken into account.
+        substituteInPlace "$path" \
+          --replace /bin/bash ${customBash}/bin/bash \
+          --replace /usr/bin/env ${coreutils}/bin/env \
+          --replace /bin/true ${coreutils}/bin/true
+      done
+
+      # Fixup scripts that generate scripts. Not fixed up by patchShebangs below.
+      substituteInPlace scripts/bootstrap/compile.sh \
+          --replace /bin/bash ${customBash}/bin/bash
+
+      # add nix environment vars to .bazelrc
+      cat >> .bazelrc <<EOF
+      build --experimental_distdir=${distDir}
+      fetch --experimental_distdir=${distDir}
+      build --copt="$(echo $NIX_CFLAGS_COMPILE | sed -e 's/ /" --copt="/g')"
+      build --host_copt="$(echo $NIX_CFLAGS_COMPILE | sed -e 's/ /" --host_copt="/g')"
+      build --linkopt="-Wl,$(echo $NIX_LDFLAGS | sed -e 's/ /" --linkopt="-Wl,/g')"
+      build --host_linkopt="-Wl,$(echo $NIX_LDFLAGS | sed -e 's/ /" --host_linkopt="-Wl,/g')"
+      build --host_javabase='@local_jdk//:jdk'
+      build --host_java_toolchain='${javaToolchain}'
+      EOF
+
+      # add the same environment vars to compile.sh
+      sed -e "/\$command \\\\$/a --copt=\"$(echo $NIX_CFLAGS_COMPILE | sed -e 's/ /" --copt=\"/g')\" \\\\" \
+          -e "/\$command \\\\$/a --host_copt=\"$(echo $NIX_CFLAGS_COMPILE | sed -e 's/ /" --host_copt=\"/g')\" \\\\" \
+          -e "/\$command \\\\$/a --linkopt=\"-Wl,$(echo $NIX_LDFLAGS | sed -e 's/ /" --linkopt=\"-Wl,/g')\" \\\\" \
+          -e "/\$command \\\\$/a --host_linkopt=\"-Wl,$(echo $NIX_LDFLAGS | sed -e 's/ /" --host_linkopt=\"-Wl,/g')\" \\\\" \
+          -e "/\$command \\\\$/a --host_javabase='@local_jdk//:jdk' \\\\" \
+          -e "/\$command \\\\$/a --host_java_toolchain='${javaToolchain}' \\\\" \
+          -i scripts/bootstrap/compile.sh
+
+      # --experimental_strict_action_env (which will soon become the
+      # default, see bazelbuild/bazel#2574) hardcodes the default
+      # action environment to a value that on NixOS at least is bogus.
+      # So we hardcode it to something useful.
+      substituteInPlace \
+        src/main/java/com/google/devtools/build/lib/bazel/rules/BazelRuleClassProvider.java \
+        --replace /bin:/usr/bin ${defaultShellPath}
+
+      # This is necessary to avoid:
+      # "error: no visible @interface for 'NSDictionary' declares the selector
+      # 'initWithContentsOfURL:error:'"
+      # This can be removed when the apple_sdk is upgraded beyond 10.13+
+      sed -i '/initWithContentsOfURL:versionPlistUrl/ {
+        N
+        s/error:nil\];/\];/
+      }' tools/osx/xcode_locator.m
+
+      # append the PATH with defaultShellPath in tools/bash/runfiles/runfiles.bash
+      echo "PATH=\$PATH:${defaultShellPath}" >> runfiles.bash.tmp
+      cat tools/bash/runfiles/runfiles.bash >> runfiles.bash.tmp
+      mv runfiles.bash.tmp tools/bash/runfiles/runfiles.bash
+
+      patchShebangs .
+    '';
+    in lib.optionalString stdenv.hostPlatform.isDarwin darwinPatches
+     + genericPatches;
+
+  buildInputs = [
+    buildJdk
+  ];
+
+  # when a command can’t be found in a bazel build, you might also
+  # need to add it to `defaultShellPath`.
+  nativeBuildInputs = [
+    zip
+    python
+    unzip
+    makeWrapper
+    which
+    customBash
+  ] ++ lib.optionals (stdenv.isDarwin) [ cctools libcxx CoreFoundation CoreServices Foundation ];
+
+  # Bazel makes extensive use of symlinks in the WORKSPACE.
+  # This causes problems with infinite symlinks if the build output is in the same location as the
+  # Bazel WORKSPACE. This is why before executing the build, the source code is moved into a
+  # subdirectory.
+  # Failing to do this causes "infinite symlink expansion detected"
+  preBuildPhases = ["preBuildPhase"];
+  preBuildPhase = ''
+    mkdir bazel_src
+    shopt -s dotglob extglob
+    mv !(bazel_src) bazel_src
+  '';
+
+  buildPhase = ''
+    # Increasing memory during compilation might be necessary.
+    # export BAZEL_JAVAC_OPTS="-J-Xmx2g -J-Xms200m"
+    ./bazel_src/compile.sh
+    ./bazel_src/scripts/generate_bash_completion.sh \
+        --bazel=./bazel_src/output/bazel \
+        --output=./bazel_src/output/bazel-complete.bash \
+        --prepend=./bazel_src/scripts/bazel-complete-header.bash \
+        --prepend=./bazel_src/scripts/bazel-complete-template.bash
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+
+    # official wrapper scripts that searches for $WORKSPACE_ROOT/tools/bazel
+    # if it can’t find something in tools, it calls $out/bin/bazel-real
+    cp ./bazel_src/scripts/packages/bazel.sh $out/bin/bazel
+    mv ./bazel_src/output/bazel $out/bin/bazel-real
+
+    wrapProgram "$out/bin/bazel" --add-flags --server_javabase="${runJdk}"
+
+    # shell completion files
+    mkdir -p $out/share/bash-completion/completions $out/share/zsh/site-functions
+    mv ./bazel_src/output/bazel-complete.bash $out/share/bash-completion/completions/bazel
+    cp ./bazel_src/scripts/zsh_completion/_bazel $out/share/zsh/site-functions/
+  '';
+
+  # Temporarily disabling for now. A new approach is needed for this derivation as Bazel
+  # accesses the internet during the tests which fails in a sandbox.
+  doInstallCheck = false;
+  installCheckPhase = ''
+    export TEST_TMPDIR=$(pwd)
+
+    hello_test () {
+      $out/bin/bazel test \
+        --test_output=errors \
+        --java_toolchain='${javaToolchain}' \
+        examples/cpp:hello-success_test \
+        examples/java-native/src/test/java/com/example/myproject:hello
+    }
+
+    cd ./bazel_src
+
+    # test whether $WORKSPACE_ROOT/tools/bazel works
+
+    mkdir -p tools
+    cat > tools/bazel <<"EOF"
+    #!${runtimeShell} -e
+    exit 1
+    EOF
+    chmod +x tools/bazel
+
+    # first call should fail if tools/bazel is used
+    ! hello_test
+
+    cat > tools/bazel <<"EOF"
+    #!${runtimeShell} -e
+    exec "$BAZEL_REAL" "$@"
+    EOF
+
+    # second call succeeds because it defers to $out/bin/bazel-real
+    hello_test
+  '';
+
+  # Save paths to hardcoded dependencies so Nix can detect them.
+  postFixup = ''
+    mkdir -p $out/nix-support
+    echo "${customBash} ${defaultShellPath}" >> $out/nix-support/depends
+    # The templates get tar’d up into a .jar,
+    # so nix can’t detect python is needed in the runtime closure
+    echo "${python}" >> $out/nix-support/depends
+  '';
+
+  dontStrip = true;
+  dontPatchELF = true;
+}
diff --git a/pkgs/development/tools/build-managers/bazel/bazel_0/glibc.patch b/pkgs/development/tools/build-managers/bazel/bazel_0/glibc.patch
new file mode 100644
index 000000000000..c4de48068f11
--- /dev/null
+++ b/pkgs/development/tools/build-managers/bazel/bazel_0/glibc.patch
@@ -0,0 +1,78 @@
+From https://github.com/grpc/grpc/commit/57586a1ca7f17b1916aed3dea4ff8de872dbf853
+From: Benjamin Peterson <benjamin@dropbox.com>
+Date: Fri, 3 May 2019 08:11:00 -0700
+Subject: [PATCH] Rename gettid() functions.
+
+glibc 2.30 will declare its own gettid; see https://sourceware.org/git/?p=glibc.git;a=commit;h=1d0fc213824eaa2a8f8c4385daaa698ee8fb7c92. Rename the grpc versions to avoid naming conflicts.
+---
+ src/core/lib/gpr/log_linux.cc          | 6 ++----
+ src/core/lib/gpr/log_posix.cc          | 4 ++--
+ src/core/lib/iomgr/ev_epollex_linux.cc | 4 ++--
+ 3 files changed, 6 insertions(+), 8 deletions(-)
+
+diff --git a/third_party/grpc/src/core/lib/gpr/log_linux.cc b/src/core/lib/gpr/log_linux.cc
+index 81026e5689b..8b597b4cf2f 100644
+--- a/third_party/grpc/src/core/lib/gpr/log_linux.cc
++++ b/third_party/grpc/src/core/lib/gpr/log_linux.cc
+@@ -40,7 +40,7 @@
+ #include <time.h>
+ #include <unistd.h>
+
+-static long gettid(void) { return syscall(__NR_gettid); }
++static long sys_gettid(void) { return syscall(__NR_gettid); }
+
+ void gpr_log(const char* file, int line, gpr_log_severity severity,
+              const char* format, ...) {
+@@ -70,7 +70,7 @@ void gpr_default_log(gpr_log_func_args* args) {
+   gpr_timespec now = gpr_now(GPR_CLOCK_REALTIME);
+   struct tm tm;
+   static __thread long tid = 0;
+-  if (tid == 0) tid = gettid();
++  if (tid == 0) tid = sys_gettid();
+
+   timer = static_cast<time_t>(now.tv_sec);
+   final_slash = strrchr(args->file, '/');
+diff --git a/third_party/grpc/src/core/lib/gpr/log_posix.cc b/src/core/lib/gpr/log_posix.cc
+index b6edc14ab6b..2f7c6ce3760 100644
+--- a/third_party/grpc/src/core/lib/gpr/log_posix.cc
++++ b/third_party/grpc/src/core/lib/gpr/log_posix.cc
+@@ -31,7 +31,7 @@
+ #include <string.h>
+ #include <time.h>
+
+-static intptr_t gettid(void) { return (intptr_t)pthread_self(); }
++static intptr_t sys_gettid(void) { return (intptr_t)pthread_self(); }
+
+ void gpr_log(const char* file, int line, gpr_log_severity severity,
+              const char* format, ...) {
+@@ -86,7 +86,7 @@ void gpr_default_log(gpr_log_func_args* args) {
+   char* prefix;
+   gpr_asprintf(&prefix, "%s%s.%09d %7" PRIdPTR " %s:%d]",
+                gpr_log_severity_string(args->severity), time_buffer,
+-               (int)(now.tv_nsec), gettid(), display_file, args->line);
++               (int)(now.tv_nsec), sys_gettid(), display_file, args->line);
+
+   fprintf(stderr, "%-70s %s\n", prefix, args->message);
+   gpr_free(prefix);
+diff --git a/third_party/grpc/src/core/lib/iomgr/ev_epollex_linux.cc b/src/core/lib/iomgr/ev_epollex_linux.cc
+index c2d80c08ddb..4a83cb6c215 100644
+--- a/third_party/grpc/src/core/lib/iomgr/ev_epollex_linux.cc
++++ b/third_party/grpc/src/core/lib/iomgr/ev_epollex_linux.cc
+@@ -1077,7 +1077,7 @@ static void end_worker(grpc_pollset* pollset, grpc_pollset_worker* worker,
+ }
+
+ #ifndef NDEBUG
+-static long gettid(void) { return syscall(__NR_gettid); }
++static long sys_gettid(void) { return syscall(__NR_gettid); }
+ #endif
+
+ /* pollset->mu lock must be held by the caller before calling this.
+@@ -1097,7 +1097,7 @@ static grpc_error* pollset_work(grpc_pollset* pollset,
+ #define WORKER_PTR (&worker)
+ #endif
+ #ifndef NDEBUG
+-  WORKER_PTR->originator = gettid();
++  WORKER_PTR->originator = sys_gettid();
+ #endif
+   if (GRPC_TRACE_FLAG_ENABLED(grpc_polling_trace)) {
+     gpr_log(GPR_INFO,
diff --git a/pkgs/development/tools/build-managers/bazel/bazel_0/python-stub-path-fix.patch b/pkgs/development/tools/build-managers/bazel/bazel_0/python-stub-path-fix.patch
new file mode 100644
index 000000000000..cbc4192d2d9b
--- /dev/null
+++ b/pkgs/development/tools/build-managers/bazel/bazel_0/python-stub-path-fix.patch
@@ -0,0 +1,13 @@
+diff --git a/src/main/java/com/google/devtools/build/lib/bazel/rules/python/python_stub_template.txt b/src/main/java/com/google/devtools/build/lib/bazel/rules/python/python_stub_template.txt
+index dac21c9a83..69b11c283f 100644
+--- a/src/main/java/com/google/devtools/build/lib/bazel/rules/python/python_stub_template.txt
++++ b/src/main/java/com/google/devtools/build/lib/bazel/rules/python/python_stub_template.txt
+@@ -67,7 +67,7 @@ def FindPythonBinary(module_space):
+     return os.path.join(module_space, PYTHON_BINARY)
+   else:
+     # Case 4: Path has to be looked up in the search path.
+-    return SearchPath(PYTHON_BINARY)
++    return "NIX_STORE_PYTHON_PATH"
+ 
+ def CreatePythonPathEntries(python_imports, module_space):
+   parts = python_imports.split(':');
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 3b864a2b57f0..5574d0cc76aa 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -9781,6 +9781,15 @@ in
     stdenv = if stdenv.cc.isClang then llvmPackages_6.stdenv else stdenv;
   };
 
+  bazel_0 = callPackage ../development/tools/build-managers/bazel/bazel_0 {
+    inherit (darwin) cctools;
+    inherit (darwin.apple_sdk.frameworks) CoreFoundation CoreServices Foundation;
+    buildJdk = jdk8;
+    buildJdkName = "jdk8";
+    runJdk = jdk11_headless;
+    stdenv = if stdenv.cc.isClang then llvmPackages_6.stdenv else stdenv;
+  };
+
   bazel_1 = callPackage ../development/tools/build-managers/bazel/bazel_1 {
     inherit (darwin) cctools;
     inherit (darwin.apple_sdk.frameworks) CoreFoundation CoreServices Foundation;