diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7ea0374..65e8dfd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,6 +11,7 @@ endif()
 # Options
 option(BUILD_SHARED_LIBS "Build shared libraries" OFF)
 option(BLAZE_BUILD_EXAMPLES "Build the Blaze example programs" ${BLAZE_STANDALONE})
+option(BLAZE_BUILD_TESTS "Build the Blaze test programs" ${BLAZE_STANDALONE})
 
 # ------------------------------------------
 
@@ -55,18 +56,19 @@ endif()
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
 # ------------------------------------------
-# Library
+# Dependencies
 
 add_subdirectory("vendor/ruc")
 
 # ------------------------------------------
-# Application target
+# Library target
 
 # Define source files
-file(GLOB_RECURSE PROJECT_SOURCES "src/*.cpp")
+file(GLOB_RECURSE LIBRARY_SOURCES "src/*.cpp")
 
-add_executable(${PROJECT} ${PROJECT_SOURCES})
-target_include_directories(${PROJECT} PRIVATE "src")
+add_library(${PROJECT} ${LIBRARY_SOURCES})
+target_include_directories(${PROJECT} PUBLIC
+	"src")
 target_link_libraries(${PROJECT} readline ruc)
 
 # ------------------------------------------
@@ -78,53 +80,55 @@ add_custom_target(${PROJECT}-lisp
 add_dependencies(${PROJECT} ${PROJECT}-lisp)
 
 # ------------------------------------------
-# Execute target
+# Example target
 
-add_custom_target(run
-    COMMAND ${PROJECT} -c
-	DEPENDS ${PROJECT})
+if (BLAZE_BUILD_EXAMPLES)
+	add_subdirectory("example")
+endif()
 
 # ------------------------------------------
 # Test targets
 
-function(make_test_target target_name step_name)
-	add_custom_target(${target_name}
-		COMMAND ../vendor/mal/runtest.py --deferrable --optional ../tests/${step_name}.mal -- ./${PROJECT})
-	add_dependencies(${target_name} ${PROJECT})
-endfunction()
-
-make_test_target("test0" "step0_repl")
-make_test_target("test1" "step1_read_print")
-make_test_target("test2" "step2_eval")
-make_test_target("test3" "step3_env")
-make_test_target("test4" "step4_if_fn_do")
-make_test_target("test5" "step5_tco")
-make_test_target("test6" "step6_file")
-make_test_target("test7" "step7_quote")
-make_test_target("test8" "step8_macros")
-make_test_target("test9" "step9_try")
-make_test_target("testA" "stepA_mal")
-
-function(make_host_test_target target_name step_name)
-	add_custom_target(${target_name}
-		COMMAND ../vendor/mal/runtest.py --deferrable --optional ../tests/${step_name}.mal -- ./${PROJECT} ../mal/${step_name}.mal)
-	add_dependencies(${target_name} ${PROJECT})
-endfunction()
-
-make_host_test_target("host_test0" "step0_repl")
-make_host_test_target("host_test1" "step1_read_print")
-make_host_test_target("host_test2" "step2_eval")
-make_host_test_target("host_test3" "step3_env")
-make_host_test_target("host_test4" "step4_if_fn_do")
-# make_host_test_target("host_test5" "step5_tco") # disabled
-make_host_test_target("host_test6" "step6_file")
-make_host_test_target("host_test7" "step7_quote")
-make_host_test_target("host_test8" "step8_macros")
-make_host_test_target("host_test9" "step9_try")
-make_host_test_target("host_testA" "stepA_mal")
-
-add_custom_target(perf
-    COMMAND ./${PROJECT} ../tests/perf1.mal
-	COMMAND ./${PROJECT} ../tests/perf2.mal
-	COMMAND ./${PROJECT} ../tests/perf3.mal)
-add_dependencies(perf ${PROJECT})
+if (BLAZE_BUILD_TESTS)
+	function(make_test_target target_name step_name)
+		add_custom_target(${target_name}
+			COMMAND ../vendor/mal/runtest.py --deferrable --optional ../tests/${step_name}.mal -- ./${PROJECT})
+		add_dependencies(${target_name} ${PROJECT})
+	endfunction()
+
+	make_test_target("test0" "step0_repl")
+	make_test_target("test1" "step1_read_print")
+	make_test_target("test2" "step2_eval")
+	make_test_target("test3" "step3_env")
+	make_test_target("test4" "step4_if_fn_do")
+	make_test_target("test5" "step5_tco")
+	make_test_target("test6" "step6_file")
+	make_test_target("test7" "step7_quote")
+	make_test_target("test8" "step8_macros")
+	make_test_target("test9" "step9_try")
+	make_test_target("testA" "stepA_mal")
+
+	function(make_host_test_target target_name step_name)
+		add_custom_target(${target_name}
+			COMMAND ../vendor/mal/runtest.py --deferrable --optional ../tests/${step_name}.mal -- ./${PROJECT} ../mal/${step_name}.mal)
+		add_dependencies(${target_name} ${PROJECT})
+	endfunction()
+
+	make_host_test_target("host_test0" "step0_repl")
+	make_host_test_target("host_test1" "step1_read_print")
+	make_host_test_target("host_test2" "step2_eval")
+	make_host_test_target("host_test3" "step3_env")
+	make_host_test_target("host_test4" "step4_if_fn_do")
+	# make_host_test_target("host_test5" "step5_tco") # disabled
+	make_host_test_target("host_test6" "step6_file")
+	make_host_test_target("host_test7" "step7_quote")
+	make_host_test_target("host_test8" "step8_macros")
+	make_host_test_target("host_test9" "step9_try")
+	make_host_test_target("host_testA" "stepA_mal")
+
+	add_custom_target(perf
+		COMMAND ./${PROJECT} ../tests/perf1.mal
+		COMMAND ./${PROJECT} ../tests/perf2.mal
+		COMMAND ./${PROJECT} ../tests/perf3.mal)
+	add_dependencies(perf ${PROJECT})
+endif()
diff --git a/example/CMakeLists.txt b/example/CMakeLists.txt
new file mode 100644
index 0000000..8414202
--- /dev/null
+++ b/example/CMakeLists.txt
@@ -0,0 +1,25 @@
+# ------------------------------------------
+# User config between these lines
+
+# Set project name
+set(EXAMPLE "repl")
+
+# ------------------------------------------
+
+project(${EXAMPLE} CXX)
+
+# Define game source files
+file(GLOB_RECURSE EXAMPLE_SOURCES "${CMAKE_CURRENT_SOURCE_DIR}/src/*.cpp")
+
+add_executable(${EXAMPLE} ${EXAMPLE_SOURCES})
+target_include_directories(${EXAMPLE} PRIVATE
+	"src")
+target_link_libraries(${EXAMPLE} ${PROJECT})
+
+# ------------------------------------------
+
+# Add 'make run' target
+add_custom_target(run
+	COMMAND ${EXAMPLE} -c
+	DEPENDS ${PROJECT}
+	WORKING_DIRECTORY "..")
diff --git a/src/main.cpp b/example/src/main.cpp
similarity index 93%
rename from src/main.cpp
rename to example/src/main.cpp
index b08bc39..a6f29ff 100644
--- a/src/main.cpp
+++ b/example/src/main.cpp
@@ -13,11 +13,11 @@
 #include "ruc/format/color.h"
 #include "ruc/format/print.h"
 
-#include "ast.h"
-#include "env/environment.h"
-#include "forward.h"
-#include "repl.h"
-#include "settings.h"
+#include "blaze/ast.h"
+#include "blaze/env/environment.h"
+#include "blaze/forward.h"
+#include "blaze/repl.h"
+#include "blaze/settings.h"
 
 namespace blaze {
 
diff --git a/src/ast.cpp b/src/blaze/ast.cpp
similarity index 97%
rename from src/ast.cpp
rename to src/blaze/ast.cpp
index 28db938..c470bc9 100644
--- a/src/ast.cpp
+++ b/src/blaze/ast.cpp
@@ -10,12 +10,12 @@
 #include <utility> // std::move
 #include <vector>
 
-#include "ast.h"
-#include "env/environment.h"
-#include "error.h"
-#include "forward.h"
-#include "printer.h"
-#include "types.h"
+#include "blaze/ast.h"
+#include "blaze/env/environment.h"
+#include "blaze/error.h"
+#include "blaze/forward.h"
+#include "blaze/printer.h"
+#include "blaze/types.h"
 
 namespace blaze {
 
diff --git a/src/ast.h b/src/blaze/ast.h
similarity index 99%
rename from src/ast.h
rename to src/blaze/ast.h
index f861896..e462640 100644
--- a/src/ast.h
+++ b/src/blaze/ast.h
@@ -20,7 +20,7 @@
 
 #include "ruc/format/formatter.h"
 
-#include "forward.h"
+#include "blaze/forward.h"
 
 namespace blaze {
 
diff --git a/src/env/environment.cpp b/src/blaze/env/environment.cpp
similarity index 96%
rename from src/env/environment.cpp
rename to src/blaze/env/environment.cpp
index eb46d91..e88b6b6 100644
--- a/src/env/environment.cpp
+++ b/src/blaze/env/environment.cpp
@@ -11,11 +11,11 @@
 #include "ruc/file.h"
 #include "ruc/format/format.h"
 
-#include "ast.h"
-#include "env/environment.h"
-#include "error.h"
-#include "forward.h"
-#include "repl.h"
+#include "blaze/ast.h"
+#include "blaze/env/environment.h"
+#include "blaze/error.h"
+#include "blaze/forward.h"
+#include "blaze/repl.h"
 
 namespace blaze {
 
diff --git a/src/env/environment.h b/src/blaze/env/environment.h
similarity index 97%
rename from src/env/environment.h
rename to src/blaze/env/environment.h
index b24058a..4bcda6d 100644
--- a/src/env/environment.h
+++ b/src/blaze/env/environment.h
@@ -11,8 +11,8 @@
 #include <unordered_map>
 #include <vector>
 
-#include "ast.h"
-#include "forward.h"
+#include "blaze/ast.h"
+#include "blaze/forward.h"
 
 namespace blaze {
 
diff --git a/src/env/functions/collection-access.cpp b/src/blaze/env/functions/collection-access.cpp
similarity index 97%
rename from src/env/functions/collection-access.cpp
rename to src/blaze/env/functions/collection-access.cpp
index a2c97bb..ab85617 100644
--- a/src/env/functions/collection-access.cpp
+++ b/src/blaze/env/functions/collection-access.cpp
@@ -7,10 +7,10 @@
 #include <cstddef> // size_t
 #include <memory>  // std:static_pointer_cast
 
-#include "ast.h"
-#include "env/macro.h"
-#include "forward.h"
-#include "util.h"
+#include "blaze/ast.h"
+#include "blaze/env/macro.h"
+#include "blaze/forward.h"
+#include "blaze/util.h"
 
 namespace blaze {
 
diff --git a/src/env/functions/collection-constructor.cpp b/src/blaze/env/functions/collection-constructor.cpp
similarity index 96%
rename from src/env/functions/collection-constructor.cpp
rename to src/blaze/env/functions/collection-constructor.cpp
index b729c08..4bfb0b0 100644
--- a/src/env/functions/collection-constructor.cpp
+++ b/src/blaze/env/functions/collection-constructor.cpp
@@ -7,10 +7,10 @@
 #include <cstddef> // size_t
 #include <memory>  // std:static_pointer_cast
 
-#include "ast.h"
-#include "env/macro.h"
-#include "forward.h"
-#include "util.h"
+#include "blaze/ast.h"
+#include "blaze/env/macro.h"
+#include "blaze/forward.h"
+#include "blaze/util.h"
 
 namespace blaze {
 
diff --git a/src/env/functions/collection-modify.cpp b/src/blaze/env/functions/collection-modify.cpp
similarity index 97%
rename from src/env/functions/collection-modify.cpp
rename to src/blaze/env/functions/collection-modify.cpp
index 54bc098..042c305 100644
--- a/src/env/functions/collection-modify.cpp
+++ b/src/blaze/env/functions/collection-modify.cpp
@@ -8,12 +8,12 @@
 #include <cstddef>   // size_t
 #include <memory>    // std::static_pointer_cast
 
-#include "ast.h"
-#include "env/environment.h"
-#include "env/macro.h"
-#include "forward.h"
-#include "repl.h"
-#include "util.h"
+#include "blaze/ast.h"
+#include "blaze/env/environment.h"
+#include "blaze/env/macro.h"
+#include "blaze/forward.h"
+#include "blaze/repl.h"
+#include "blaze/util.h"
 
 namespace blaze {
 
diff --git a/src/env/functions/compare.cpp b/src/blaze/env/functions/compare.cpp
similarity index 98%
rename from src/env/functions/compare.cpp
rename to src/blaze/env/functions/compare.cpp
index 5a87563..c49a00d 100644
--- a/src/env/functions/compare.cpp
+++ b/src/blaze/env/functions/compare.cpp
@@ -8,9 +8,9 @@
 #include <functional> // std::function
 #include <memory>     // std::static_pointer_cast
 
-#include "ast.h"
-#include "env/macro.h"
-#include "util.h"
+#include "blaze/ast.h"
+#include "blaze/env/macro.h"
+#include "blaze/util.h"
 
 namespace blaze {
 
diff --git a/src/env/functions/convert.cpp b/src/blaze/env/functions/convert.cpp
similarity index 98%
rename from src/env/functions/convert.cpp
rename to src/blaze/env/functions/convert.cpp
index 0d9939e..1da0c3d 100644
--- a/src/env/functions/convert.cpp
+++ b/src/blaze/env/functions/convert.cpp
@@ -8,9 +8,9 @@
 #include <memory>
 #include <system_error> // std::errc
 
-#include "ast.h"
-#include "env/macro.h"
-#include "util.h"
+#include "blaze/ast.h"
+#include "blaze/env/macro.h"
+#include "blaze/util.h"
 
 namespace blaze {
 
diff --git a/src/env/functions/format.cpp b/src/blaze/env/functions/format.cpp
similarity index 95%
rename from src/env/functions/format.cpp
rename to src/blaze/env/functions/format.cpp
index 4c2add8..559a8ab 100644
--- a/src/env/functions/format.cpp
+++ b/src/blaze/env/functions/format.cpp
@@ -7,13 +7,13 @@
 #include <iterator> // std::next
 #include <string>
 
-#include "reader.h"
 #include "ruc/format/print.h"
 
-#include "ast.h"
-#include "env/macro.h"
-#include "printer.h"
-#include "util.h"
+#include "blaze/ast.h"
+#include "blaze/env/macro.h"
+#include "blaze/printer.h"
+#include "blaze/reader.h"
+#include "blaze/util.h"
 
 namespace blaze {
 
diff --git a/src/env/functions/meta.cpp b/src/blaze/env/functions/meta.cpp
similarity index 90%
rename from src/env/functions/meta.cpp
rename to src/blaze/env/functions/meta.cpp
index b9bb686..b45c3ff 100644
--- a/src/env/functions/meta.cpp
+++ b/src/blaze/env/functions/meta.cpp
@@ -4,11 +4,11 @@
  * SPDX-License-Identifier: MIT
  */
 
-#include "ast.h"
-#include "env/macro.h"
-#include "error.h"
-#include "forward.h"
-#include "util.h"
+#include "blaze/ast.h"
+#include "blaze/env/macro.h"
+#include "blaze/error.h"
+#include "blaze/forward.h"
+#include "blaze/util.h"
 
 namespace blaze {
 
diff --git a/src/env/functions/mutable.cpp b/src/blaze/env/functions/mutable.cpp
similarity index 91%
rename from src/env/functions/mutable.cpp
rename to src/blaze/env/functions/mutable.cpp
index 9e1c11c..0b1fb96 100644
--- a/src/env/functions/mutable.cpp
+++ b/src/blaze/env/functions/mutable.cpp
@@ -7,12 +7,12 @@
 #include <algorithm> // std::copy
 #include <memory>    // std::static_pointer_cast
 
-#include "ast.h"
-#include "env/environment.h"
-#include "env/macro.h"
-#include "forward.h"
-#include "repl.h"
-#include "util.h"
+#include "blaze/ast.h"
+#include "blaze/env/environment.h"
+#include "blaze/env/macro.h"
+#include "blaze/forward.h"
+#include "blaze/repl.h"
+#include "blaze/util.h"
 
 namespace blaze {
 
diff --git a/src/env/functions/operators.cpp b/src/blaze/env/functions/operators.cpp
similarity index 98%
rename from src/env/functions/operators.cpp
rename to src/blaze/env/functions/operators.cpp
index 86f5e8e..43ea0ce 100644
--- a/src/env/functions/operators.cpp
+++ b/src/blaze/env/functions/operators.cpp
@@ -7,9 +7,9 @@
 #include <cstdint> // int64_t
 #include <memory>  // std::static_pointer_cast
 
-#include "ast.h"
-#include "env/macro.h"
-#include "util.h"
+#include "blaze/ast.h"
+#include "blaze/env/macro.h"
+#include "blaze/util.h"
 
 namespace blaze {
 
diff --git a/src/env/functions/other.cpp b/src/blaze/env/functions/other.cpp
similarity index 85%
rename from src/env/functions/other.cpp
rename to src/blaze/env/functions/other.cpp
index 9db73ad..7e99d11 100644
--- a/src/env/functions/other.cpp
+++ b/src/blaze/env/functions/other.cpp
@@ -7,11 +7,11 @@
 #include <chrono>  // std::chrono::sytem_clock
 #include <cstdint> // int64_t
 
-#include "ast.h"
-#include "env/macro.h"
-#include "error.h"
-#include "forward.h"
-#include "util.h"
+#include "blaze/ast.h"
+#include "blaze/env/macro.h"
+#include "blaze/error.h"
+#include "blaze/forward.h"
+#include "blaze/util.h"
 
 namespace blaze {
 
diff --git a/src/env/functions/predicate.cpp b/src/blaze/env/functions/predicate.cpp
similarity index 97%
rename from src/env/functions/predicate.cpp
rename to src/blaze/env/functions/predicate.cpp
index 522be78..e6ab000 100644
--- a/src/env/functions/predicate.cpp
+++ b/src/blaze/env/functions/predicate.cpp
@@ -4,9 +4,9 @@
  * SPDX-License-Identifier: MIT
  */
 
-#include "ast.h"
-#include "env/macro.h"
-#include "util.h"
+#include "blaze/ast.h"
+#include "blaze/env/macro.h"
+#include "blaze/util.h"
 
 namespace blaze {
 
diff --git a/src/env/functions/repl.cpp b/src/blaze/env/functions/repl.cpp
similarity index 91%
rename from src/env/functions/repl.cpp
rename to src/blaze/env/functions/repl.cpp
index 469bd24..36dd6c4 100644
--- a/src/env/functions/repl.cpp
+++ b/src/blaze/env/functions/repl.cpp
@@ -8,10 +8,10 @@
 
 #include "ruc/file.h"
 
-#include "ast.h"
-#include "env/macro.h"
-#include "repl.h"
-#include "util.h"
+#include "blaze/ast.h"
+#include "blaze/env/macro.h"
+#include "blaze/repl.h"
+#include "blaze/util.h"
 
 namespace blaze {
 
diff --git a/src/env/macro.h b/src/blaze/env/macro.h
similarity index 91%
rename from src/env/macro.h
rename to src/blaze/env/macro.h
index e3af93d..e5dcbc4 100644
--- a/src/env/macro.h
+++ b/src/blaze/env/macro.h
@@ -4,9 +4,11 @@
  * SPDX-License-Identifier: MIT
  */
 
+#pragma once
+
 #include <unordered_map>
 
-#include "env/environment.h"
+#include "blaze/env/environment.h"
 
 #define ADD_FUNCTION(name, signature, documentation, lambda) \
 	Environment::registerFunction(                           \
diff --git a/src/error.h b/src/blaze/error.h
similarity index 95%
rename from src/error.h
rename to src/blaze/error.h
index 4fd857e..9e10ea3 100644
--- a/src/error.h
+++ b/src/blaze/error.h
@@ -10,8 +10,8 @@
 
 #include "ruc/singleton.h"
 
-#include "forward.h"
-#include "lexer.h"
+#include "blaze/forward.h"
+#include "blaze/lexer.h"
 
 namespace blaze {
 
diff --git a/src/eval-special-form.cpp b/src/blaze/eval-special-form.cpp
similarity index 98%
rename from src/eval-special-form.cpp
rename to src/blaze/eval-special-form.cpp
index 2d33735..fc5e9b3 100644
--- a/src/eval-special-form.cpp
+++ b/src/blaze/eval-special-form.cpp
@@ -16,16 +16,16 @@
 #include "ruc/format/format.h"
 #include "ruc/format/print.h"
 
-#include "ast.h"
-#include "env/environment.h"
-#include "error.h"
-#include "eval.h"
-#include "forward.h"
-#include "macro.h"
-#include "printer.h"
-#include "settings.h"
-#include "types.h"
-#include "util.h"
+#include "blaze/ast.h"
+#include "blaze/env/environment.h"
+#include "blaze/error.h"
+#include "blaze/eval.h"
+#include "blaze/forward.h"
+#include "blaze/macro.h"
+#include "blaze/printer.h"
+#include "blaze/settings.h"
+#include "blaze/types.h"
+#include "blaze/util.h"
 
 namespace blaze {
 
diff --git a/src/eval.cpp b/src/blaze/eval.cpp
similarity index 96%
rename from src/eval.cpp
rename to src/blaze/eval.cpp
index 2b67690..8fc7025 100644
--- a/src/eval.cpp
+++ b/src/blaze/eval.cpp
@@ -10,13 +10,13 @@
 #include <span>   // std::span
 #include <string>
 
-#include "ast.h"
-#include "env/environment.h"
-#include "error.h"
-#include "eval.h"
-#include "forward.h"
-#include "types.h"
-#include "util.h"
+#include "blaze/ast.h"
+#include "blaze/env/environment.h"
+#include "blaze/error.h"
+#include "blaze/eval.h"
+#include "blaze/forward.h"
+#include "blaze/types.h"
+#include "blaze/util.h"
 
 namespace blaze {
 
diff --git a/src/eval.h b/src/blaze/eval.h
similarity index 97%
rename from src/eval.h
rename to src/blaze/eval.h
index cedde0d..0f85574 100644
--- a/src/eval.h
+++ b/src/blaze/eval.h
@@ -8,7 +8,7 @@
 
 #include <vector>
 
-#include "forward.h" // EnvironmentPtr
+#include "blaze/forward.h" // EnvironmentPtr
 
 namespace blaze {
 
diff --git a/src/forward.h b/src/blaze/forward.h
similarity index 100%
rename from src/forward.h
rename to src/blaze/forward.h
diff --git a/src/lexer.cpp b/src/blaze/lexer.cpp
similarity index 98%
rename from src/lexer.cpp
rename to src/blaze/lexer.cpp
index 3bf73fd..29151ee 100644
--- a/src/lexer.cpp
+++ b/src/blaze/lexer.cpp
@@ -11,8 +11,8 @@
 #include "ruc/format/print.h"
 #include "ruc/genericlexer.h"
 
-#include "error.h"
-#include "lexer.h"
+#include "blaze/error.h"
+#include "blaze/lexer.h"
 
 namespace blaze {
 
diff --git a/src/lexer.h b/src/blaze/lexer.h
similarity index 100%
rename from src/lexer.h
rename to src/blaze/lexer.h
diff --git a/src/macro.h b/src/blaze/macro.h
similarity index 95%
rename from src/macro.h
rename to src/blaze/macro.h
index 98ada68..aa6d842 100644
--- a/src/macro.h
+++ b/src/blaze/macro.h
@@ -4,7 +4,9 @@
  * SPDX-License-Identifier: MIT
  */
 
-#include "eval.h"
+#pragma once
+
+#include "blaze/eval.h"
 
 #define CONCAT(a, b) CONCAT_IMPL(a, b)
 #define CONCAT_IMPL(a, b) a##b
diff --git a/src/printer.cpp b/src/blaze/printer.cpp
similarity index 96%
rename from src/printer.cpp
rename to src/blaze/printer.cpp
index e37c597..fedd22a 100644
--- a/src/printer.cpp
+++ b/src/blaze/printer.cpp
@@ -11,13 +11,13 @@
 #include "ruc/format/color.h"
 #include "ruc/format/format.h"
 
-#include "ast.h"
-#include "error.h"
-#include "lexer.h"
-#include "printer.h"
-#include "settings.h"
-#include "types.h"
-#include "util.h"
+#include "blaze/ast.h"
+#include "blaze/error.h"
+#include "blaze/lexer.h"
+#include "blaze/printer.h"
+#include "blaze/settings.h"
+#include "blaze/types.h"
+#include "blaze/util.h"
 
 namespace blaze {
 
diff --git a/src/printer.h b/src/blaze/printer.h
similarity index 96%
rename from src/printer.h
rename to src/blaze/printer.h
index f99686a..4116b10 100644
--- a/src/printer.h
+++ b/src/blaze/printer.h
@@ -6,9 +6,10 @@
 
 #pragma once
 
-#include "ast.h"
 #include <string>
 
+#include "blaze/ast.h"
+
 namespace blaze {
 
 // Serializer -> return to string
diff --git a/src/reader.cpp b/src/blaze/reader.cpp
similarity index 98%
rename from src/reader.cpp
rename to src/blaze/reader.cpp
index caf465f..10da190 100644
--- a/src/reader.cpp
+++ b/src/blaze/reader.cpp
@@ -12,14 +12,14 @@
 #include <system_error> // std::errc
 #include <utility>      // std::move
 
-#include "error.h"
 #include "ruc/format/color.h"
 #include "ruc/meta/assert.h"
 
-#include "ast.h"
-#include "reader.h"
-#include "settings.h"
-#include "types.h"
+#include "blaze/ast.h"
+#include "blaze/error.h"
+#include "blaze/reader.h"
+#include "blaze/settings.h"
+#include "blaze/types.h"
 
 namespace blaze {
 
diff --git a/src/reader.h b/src/blaze/reader.h
similarity index 96%
rename from src/reader.h
rename to src/blaze/reader.h
index 26b01eb..7592d5b 100644
--- a/src/reader.h
+++ b/src/blaze/reader.h
@@ -10,8 +10,8 @@
 #include <memory>  // std::shared_ptr
 #include <vector>
 
-#include "ast.h"
-#include "lexer.h"
+#include "blaze/ast.h"
+#include "blaze/lexer.h"
 
 #define INDENTATION_WIDTH 2
 
diff --git a/src/readline.cpp b/src/blaze/readline.cpp
similarity index 97%
rename from src/readline.cpp
rename to src/blaze/readline.cpp
index 86f4407..06d809d 100644
--- a/src/readline.cpp
+++ b/src/blaze/readline.cpp
@@ -15,7 +15,7 @@
 #include "ruc/format/color.h"
 #include "ruc/format/print.h"
 
-#include "readline.h"
+#include "blaze/readline.h"
 
 namespace blaze {
 
diff --git a/src/readline.h b/src/blaze/readline.h
similarity index 100%
rename from src/readline.h
rename to src/blaze/readline.h
diff --git a/src/repl.cpp b/src/blaze/repl.cpp
similarity index 86%
rename from src/repl.cpp
rename to src/blaze/repl.cpp
index 7a2c260..4df86dc 100644
--- a/src/repl.cpp
+++ b/src/blaze/repl.cpp
@@ -11,16 +11,16 @@
 
 #include "ruc/format/print.h"
 
-#include "env/environment.h"
-#include "error.h"
-#include "eval.h"
-#include "forward.h"
-#include "lexer.h"
-#include "printer.h"
-#include "reader.h"
-#include "readline.h"
-#include "repl.h"
-#include "settings.h"
+#include "blaze/env/environment.h"
+#include "blaze/error.h"
+#include "blaze/eval.h"
+#include "blaze/forward.h"
+#include "blaze/lexer.h"
+#include "blaze/printer.h"
+#include "blaze/reader.h"
+#include "blaze/readline.h"
+#include "blaze/repl.h"
+#include "blaze/settings.h"
 
 namespace blaze {
 
diff --git a/src/repl.h b/src/blaze/repl.h
similarity index 92%
rename from src/repl.h
rename to src/blaze/repl.h
index 6fba5e2..9a8081f 100644
--- a/src/repl.h
+++ b/src/blaze/repl.h
@@ -10,8 +10,8 @@
 #include <string_view>
 #include <vector>
 
-#include "forward.h"
-#include "readline.h"
+#include "blaze/forward.h"
+#include "blaze/readline.h"
 
 namespace blaze {
 
diff --git a/src/settings.cpp b/src/blaze/settings.cpp
similarity index 83%
rename from src/settings.cpp
rename to src/blaze/settings.cpp
index 9f346fe..405eca5 100644
--- a/src/settings.cpp
+++ b/src/blaze/settings.cpp
@@ -8,10 +8,10 @@
 
 #include "ruc/meta/assert.h"
 
-#include "env/environment.h"
-#include "forward.h"
-#include "settings.h"
-#include "types.h"
+#include "blaze/env/environment.h"
+#include "blaze/forward.h"
+#include "blaze/settings.h"
+#include "blaze/types.h"
 
 namespace blaze {
 
diff --git a/src/settings.h b/src/blaze/settings.h
similarity index 100%
rename from src/settings.h
rename to src/blaze/settings.h
diff --git a/src/types.h b/src/blaze/types.h
similarity index 100%
rename from src/types.h
rename to src/blaze/types.h
diff --git a/src/util.h b/src/blaze/util.h
similarity index 99%
rename from src/util.h
rename to src/blaze/util.h
index 588d239..a63584a 100644
--- a/src/util.h
+++ b/src/blaze/util.h
@@ -10,8 +10,8 @@
 #include <string>
 #include <string_view>
 
-#include "error.h"
-#include "types.h"
+#include "blaze/error.h"
+#include "blaze/types.h"
 
 // -----------------------------------------