bazel_4: add bazel-execlog binary

similar to what was done for bazel 3

pkgs/development/tools/build-managers/bazel/bazel_4/default.nix

@@ -560,6 +560,13 @@ stdenv.mkDerivation rec {
     ${python3}/bin/python3 ./bazel_src/scripts/generate_fish_completion.py \
         --bazel=./bazel_src/output/bazel \
         --output=./bazel_src/output/bazel-complete.fish
+
+    # need to change directory for bazel to find the workspace
+    cd ./bazel_src
+    # build execlog tooling
+    export HOME=$(mktemp -d)
+    ./output/bazel build  src/tools/execlog:parser_deploy.jar
+    cd -
   '';
 
   installPhase = ''
@@ -572,6 +579,14 @@ stdenv.mkDerivation rec {
     cp ./bazel_src/scripts/packages/bazel.sh $out/bin/bazel
     mv ./bazel_src/output/bazel $out/bin/bazel-${version}-${system}-${arch}
 
+    mkdir $out/share
+    cp ./bazel_src/bazel-bin/src/tools/execlog/parser_deploy.jar $out/share/parser_deploy.jar
+    cat <<EOF > $out/bin/bazel-execlog
+    #!${runtimeShell} -e
+    ${runJdk}/bin/java -jar $out/share/parser_deploy.jar \$@
+    EOF
+    chmod +x $out/bin/bazel-execlog
+
     # shell completion files
     installShellCompletion --bash \
       --name bazel.bash \