diff --git a/docs/tar.md b/docs/tar.md
index ef0e63d4b..22af0d94f 100644
--- a/docs/tar.md
+++ b/docs/tar.md
@@ -110,3 +110,58 @@ https://man.freebsd.org/cgi/man.cgi?mtree(8)
 | <a id="tar-kwargs"></a>kwargs |  additional named parameters to pass to <code>tar_rule</code>   |  none |
 
 
+<a id="tar_lib.implementation"></a>
+
+## tar_lib.implementation
+
+<pre>
+tar_lib.implementation(<a href="#tar_lib.implementation-ctx">ctx</a>)
+</pre>
+
+
+
+**PARAMETERS**
+
+
+| Name  | Description | Default Value |
+| :------------- | :------------- | :------------- |
+| <a id="tar_lib.implementation-ctx"></a>ctx |  <p align="center"> - </p>   |  none |
+
+
+<a id="tar_lib.mtree_implementation"></a>
+
+## tar_lib.mtree_implementation
+
+<pre>
+tar_lib.mtree_implementation(<a href="#tar_lib.mtree_implementation-ctx">ctx</a>)
+</pre>
+
+
+
+**PARAMETERS**
+
+
+| Name  | Description | Default Value |
+| :------------- | :------------- | :------------- |
+| <a id="tar_lib.mtree_implementation-ctx"></a>ctx |  <p align="center"> - </p>   |  none |
+
+
+<a id="tar_lib.common.add_compression_args"></a>
+
+## tar_lib.common.add_compression_args
+
+<pre>
+tar_lib.common.add_compression_args(<a href="#tar_lib.common.add_compression_args-compress">compress</a>, <a href="#tar_lib.common.add_compression_args-args">args</a>)
+</pre>
+
+
+
+**PARAMETERS**
+
+
+| Name  | Description | Default Value |
+| :------------- | :------------- | :------------- |
+| <a id="tar_lib.common.add_compression_args-compress"></a>compress |  <p align="center"> - </p>   |  none |
+| <a id="tar_lib.common.add_compression_args-args"></a>args |  <p align="center"> - </p>   |  none |
+
+
diff --git a/lib/tar.bzl b/lib/tar.bzl
index 172c07e1b..23e4693b4 100644
--- a/lib/tar.bzl
+++ b/lib/tar.bzl
@@ -20,16 +20,18 @@ TODO:
 
 load("@bazel_skylib//lib:types.bzl", "types")
 load("@bazel_skylib//rules:write_file.bzl", "write_file")
-load("//lib/private:tar.bzl", "tar_lib", _tar = "tar")
+load("//lib/private:tar.bzl", _tar = "tar", _tar_lib = "tar_lib")
 
 mtree_spec = rule(
     doc = "Create an mtree specification to map a directory hierarchy. See https://man.freebsd.org/cgi/man.cgi?mtree(8)",
-    implementation = tar_lib.mtree_implementation,
-    attrs = tar_lib.mtree_attrs,
+    implementation = _tar_lib.mtree_implementation,
+    attrs = _tar_lib.mtree_attrs,
 )
 
 tar_rule = _tar
 
+tar_lib = _tar_lib
+
 def tar(name, mtree = "auto", **kwargs):
     """Wrapper macro around [`tar_rule`](#tar_rule).