diff --git a/Makefile b/Makefile
index 53b6b28..9d435ff 100644
--- a/Makefile
+++ b/Makefile
@@ -129,6 +129,7 @@ test:
 	@docker build --build-arg CACHE_INVALIDATE=${CACHE_INVALIDATE} -t metacall/distributable_linux_test:node -f tests/node/Dockerfile .
 	@docker build --build-arg CACHE_INVALIDATE=${CACHE_INVALIDATE} -t metacall/distributable_linux_test:typescript -f tests/typescript/Dockerfile .
 #	TODO:
+#	@docker build --build-arg CACHE_INVALIDATE=${CACHE_INVALIDATE} -t metacall/distributable_linux_test:ruby -f tests/ruby/Dockerfile .
 #	@docker build --build-arg CACHE_INVALIDATE=${CACHE_INVALIDATE} -t metacall/distributable_linux_test:tsx -f tests/tsx/Dockerfile .
 	@echo "Done"
 
diff --git a/source/metacall.scm b/source/metacall.scm
index 642eace..5674b6f 100644
--- a/source/metacall.scm
+++ b/source/metacall.scm
@@ -445,7 +445,9 @@ for any host, on any OS. TypeScript compiles to readable, standards-based JavaSc
 
     ; Set all environment variables for subsequent packages
     (search-paths
-      (list (search-path-specification
+      (list
+            ; MetaCall
+            (search-path-specification
               (variable "LOADER_LIBRARY_PATH")
               (files '("lib")))
             (search-path-specification
@@ -461,6 +463,10 @@ for any host, on any OS. TypeScript compiles to readable, standards-based JavaSc
               (variable "CONFIGURATION_PATH")
               (file-type 'regular)
               (files '("configurations/global.json")))
+            ; Python
+            (search-path-specification
+              (variable "PYTHONTZPATH")
+              (files (list "share/zoneinfo")))
             ; PYTHONPATH is incompatible with Guix Python
             ; but we require it for tarball installation
             (search-path-specification
@@ -468,14 +474,31 @@ for any host, on any OS. TypeScript compiles to readable, standards-based JavaSc
               (files (list (string-append
                            "lib/python"
                            (version-major+minor (package-version python-3))
-                           "/site-packages"))))))
-
-            ; TODO: Implement the rest of paths for development
-            ; C_INCLUDE_PATH
-            ; CPLUS_INCLUDE_PATH
-            ; LIBRARY_PATH
-
-    (native-search-paths search-paths)
+                           "/site-packages"))))
+            ; NodeJS
+            (search-path-specification
+              (variable "NODE_PATH")
+              (files '("lib/node_modules")))
+            ; Ruby
+            (search-path-specification
+              (variable "GEM_PATH")
+              (files (list (string-append "lib/ruby/vendor_ruby"))))
+            (search-path-specification
+              (variable "GEM_HOME")
+              (files (list (string-append "lib/ruby/vendor_ruby"))))
+            (search-path-specification
+              (variable "BUNDLE_PATH")
+              (files (list (string-append "lib/ruby/vendor_ruby"))))
+            ; GCC
+            (search-path-specification
+              (variable "C_INCLUDE_PATH")
+              (files '("include")))
+            (search-path-specification
+              (variable "CPLUS_INCLUDE_PATH")
+              (files '("include/c++" "include")))
+            (search-path-specification
+              (variable "LIBRARY_PATH")
+              (files '("lib" "lib64")))))
 
             ; TODO:
             ;
@@ -487,6 +510,8 @@ for any host, on any OS. TypeScript compiles to readable, standards-based JavaSc
             ;   (file-type 'regular)
             ;   (files '(glibc-dynamic-linker)))
 
+    (native-search-paths search-paths)
+
     (home-page "https://metacall.io/")
     (synopsis "Inter-language foreign function interface call library")
     (description "METACALL is a library that allows calling functions,
diff --git a/tests/python/Dockerfile b/tests/python/Dockerfile
index 7a83ac3..6a660d9 100644
--- a/tests/python/Dockerfile
+++ b/tests/python/Dockerfile
@@ -43,7 +43,6 @@ ARG CACHE_INVALIDATE
 
 RUN echo "Running tests ${CACHE_INVALIDATE}" \
 	&& source /gnu/etc/profile \
-	&& rm /gnu/store/4r7k7ipiaqkdf4lmnxwmbz0wx2yzygzc-python-3.10.7/lib/python3.10/site-packages/sitecustomize.py \
 	&& pip3 install metacall \
 	&& export LOADER_SCRIPT_PATH="/scripts/" \
 	&& printf 'load py script.py\ninspect\ncall test()\nexit' | metacallcli \
diff --git a/tests/ruby/Dockerfile b/tests/ruby/Dockerfile
new file mode 100644
index 0000000..ed673a4
--- /dev/null
+++ b/tests/ruby/Dockerfile
@@ -0,0 +1,54 @@
+#
+#	MetaCall Distributable by Parra Studios
+#	Distributable infrastructure for MetaCall.
+#
+#	Copyright (C) 2016 - 2024 Vicente Eduardo Ferrer Garcia <vic798@gmail.com>
+#
+#	Licensed under the Apache License, Version 2.0 (the "License");
+#	you may not use this file except in compliance with the License.
+#	You may obtain a copy of the License at
+#
+#		http://www.apache.org/licenses/LICENSE-2.0
+#
+#	Unless required by applicable law or agreed to in writing, software
+#	distributed under the License is distributed on an "AS IS" BASIS,
+#	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#	See the License for the specific language governing permissions and
+#	limitations under the License.
+#
+
+FROM busybox:1.31.1 AS ruby_test
+
+# Image descriptor
+LABEL copyright.name="Vicente Eduardo Ferrer Garcia" \
+	copyright.address="vic798@gmail.com" \
+	maintainer.name="Vicente Eduardo Ferrer Garcia" \
+	maintainer.address="vic798@gmail.com" \
+	vendor="MetaCall Inc." \
+	version="0.1"
+
+COPY out/tarball.tar.gz /
+
+RUN cd / \
+	&& tar --no-same-owner --no-same-permissions -xzf tarball.tar.gz \
+	&& rm tarball.tar.gz
+
+COPY tests/ruby/script.rb /scripts/
+COPY tests/ruby/Gemfile /scripts/
+
+WORKDIR /scripts
+
+ARG CACHE_INVALIDATE
+
+RUN echo "Running tests ${CACHE_INVALIDATE}" \
+	&& source /gnu/etc/profile \
+	&& gem install open-uri \
+	&& bundle install --verbose \
+	&& bundle config path \
+	&& export LOADER_SCRIPT_PATH="/scripts/" \
+	&& metacallcli script.rb
+	#  \
+	# | grep \
+	# 	-e 'Hello World'
+
+ENTRYPOINT ["sh", "-c"]
diff --git a/tests/ruby/Gemfile b/tests/ruby/Gemfile
new file mode 100644
index 0000000..8a0ca57
--- /dev/null
+++ b/tests/ruby/Gemfile
@@ -0,0 +1,3 @@
+source 'https://rubygems.org'
+
+gem 'xml-simple'
diff --git a/tests/ruby/script.rb b/tests/ruby/script.rb
new file mode 100644
index 0000000..4eabaa0
--- /dev/null
+++ b/tests/ruby/script.rb
@@ -0,0 +1,31 @@
+#!/usr/bin/env ruby
+
+#
+#	MetaCall Distributable by Parra Studios
+#	Distributable infrastructure for MetaCall.
+#
+#	Copyright (C) 2016 - 2024 Vicente Eduardo Ferrer Garcia <vic798@gmail.com>
+#
+#	Licensed under the Apache License, Version 2.0 (the 'License');
+#	you may not use this file except in compliance with the License.
+#	You may obtain a copy of the License at
+#
+#		http://www.apache.org/licenses/LICENSE-2.0
+#
+#	Unless required by applicable law or agreed to in writing, software
+#	distributed under the License is distributed on an "AS IS" BASIS,
+#	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#	See the License for the specific language governing permissions and
+#	limitations under the License.
+#
+
+require 'open-uri'
+
+URI.open('http://www.ruby-lang.org/') {|f|
+	f.each_line {|line| p line}
+}
+
+# TODO: Ruby cannot find gems installed by bundle
+#require 'xmlsimple'
+#result = XmlSimple.xml_in(html)
+#p result