diff --git a/.gitignore b/.gitignore
index 9853a12..645521d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,7 +5,7 @@ tmp/
 *.o
 regression.diffs
 regression.out
-/sql/semver--?.??.?.sql
+/sql/github.com+theory+pg-semver--?.??.?.sql
 /semver-*
 /latest-changes.md
 /src/*.bc
diff --git a/META.json b/META.json
index 103e79f..de2eaf4 100644
--- a/META.json
+++ b/META.json
@@ -1,5 +1,5 @@
 {
-   "name": "semver",
+   "name": "github.com+theory+pg-semver",
    "abstract": "A semantic version data type",
    "description": "A Postgres data type for the Semantic Version format with support for btree and hash indexing.",
    "version": "0.32.1",
@@ -11,7 +11,7 @@
    ],
    "license": "postgresql",
    "provides": {
-      "semver": {
+      "github.com+theory+pg-semver": {
          "abstract": "A semantic version data type",
          "file": "sql/semver.sql",
          "docfile": "doc/semver.mmd",
diff --git a/Makefile b/Makefile
index e70adb7..3d75680 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,4 @@
+NAME         = semver
 EXTENSION    = $(shell grep -m 1 '"name":' META.json | \
                sed -e 's/[[:space:]]*"name":[[:space:]]*"\([^"]*\)",/\1/')
 EXTVERSION   = $(shell grep -m 1 '[[:space:]]\{8\}"version":' META.json | \
@@ -5,7 +6,7 @@ EXTVERSION   = $(shell grep -m 1 '[[:space:]]\{8\}"version":' META.json | \
 DISTVERSION  = $(shell grep -m 1 '[[:space:]]\{3\}"version":' META.json | \
                sed -e 's/[[:space:]]*"version":[[:space:]]*"\([^"]*\)",\{0,1\}/\1/')
 
-MODULEDIR    = semver
+MODULEDIR    = $(EXTENSION)
 DATA         = $(wildcard sql/*.sql)
 DOCS         = $(wildcard doc/*.mmd)
 TESTS        = $(wildcard test/sql/*.sql)
@@ -25,7 +26,7 @@ include $(PGXS)
 
 all: sql/$(EXTENSION)--$(EXTVERSION).sql
 
-sql/$(EXTENSION)--$(EXTVERSION).sql: sql/$(EXTENSION).sql
+sql/$(EXTENSION)--$(EXTVERSION).sql: sql/$(NAME).sql
 	cp $< $@
 
 .PHONY: results
diff --git a/README.md b/README.md
index 4bd4312..0e78621 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,12 @@
 semver 0.32.0
 =============
 
+Namespace Experiment
+--------------------
+
+Experimental branch to try naming an extension with a source code repository URL
+similar to Go packages.
+
 [![PGXN version](https://badge.fury.io/pg/semver.svg)](https://badge.fury.io/pg/semver)
 [![Build Status](https://github.com/theory/pg-semver/workflows/CI/badge.svg)](https://github.com/theory/pg-semver/actions)
 
diff --git a/github.com+theory+pg-semver.control b/github.com+theory+pg-semver.control
new file mode 100644
index 0000000..3625250
--- /dev/null
+++ b/github.com+theory+pg-semver.control
@@ -0,0 +1,6 @@
+# github.com+theory+pg-semver extension
+comment = 'Semantic version data type'
+default_version = '0.32.1'
+directory = 'github.com+theory+pg-semver'
+module_pathname = '$libdir/github.com+theory+pg-semver'
+relocatable = true
diff --git a/semver.control b/semver.control
deleted file mode 100644
index fbc6d1f..0000000
--- a/semver.control
+++ /dev/null
@@ -1,7 +0,0 @@
-# semver extension
-comment = 'Semantic version data type'
-default_version = '0.32.1'
-
-directory = 'semver'
-module_pathname = '$libdir/semver'
-relocatable = true
diff --git a/sql/semver.sql b/sql/semver.sql
index cd23b47..11b3de6 100644
--- a/sql/semver.sql
+++ b/sql/semver.sql
@@ -26,22 +26,22 @@ CREATE TYPE semver;
 --
 CREATE OR REPLACE FUNCTION semver_in(cstring)
 	RETURNS semver
-	AS 'semver'
+	AS 'MODULE_PATHNAME'
 	LANGUAGE C STRICT IMMUTABLE;
 
 CREATE OR REPLACE FUNCTION semver_out(semver)
 	RETURNS cstring
-	AS 'semver'
+	AS 'MODULE_PATHNAME'
 	LANGUAGE C STRICT IMMUTABLE;
 
 CREATE OR REPLACE FUNCTION semver_recv(internal)
     RETURNS semver
-    AS 'semver'
+    AS 'MODULE_PATHNAME'
     LANGUAGE C STRICT IMMUTABLE;
 
 CREATE OR REPLACE FUNCTION semver_send(semver)
     RETURNS bytea
-    AS 'semver'
+    AS 'MODULE_PATHNAME'
     LANGUAGE C STRICT IMMUTABLE;
 
 --
@@ -67,7 +67,7 @@ CREATE TYPE semver (
 
 CREATE OR REPLACE FUNCTION to_semver(text)
 	RETURNS semver
-	AS 'semver'
+	AS 'MODULE_PATHNAME'
 	LANGUAGE C STRICT IMMUTABLE;
 
 --
@@ -76,12 +76,12 @@ CREATE OR REPLACE FUNCTION to_semver(text)
 
 CREATE OR REPLACE FUNCTION semver(text)
 	RETURNS semver
-    AS 'semver', 'text_to_semver'
+    AS 'MODULE_PATHNAME', 'text_to_semver'
 	LANGUAGE C STRICT IMMUTABLE;
 
 CREATE OR REPLACE FUNCTION text(semver)
 	RETURNS text
-    AS 'semver', 'semver_to_text'
+    AS 'MODULE_PATHNAME', 'semver_to_text'
 	LANGUAGE C STRICT IMMUTABLE;
 
 CREATE OR REPLACE FUNCTION semver(numeric)
@@ -127,7 +127,7 @@ CREATE CAST (bigint AS semver)           WITH FUNCTION semver(bigint);
 
 CREATE OR REPLACE FUNCTION semver_eq(semver, semver)
 	RETURNS bool
-	AS 'semver'
+	AS 'MODULE_PATHNAME'
 	LANGUAGE C STRICT IMMUTABLE;
 
 CREATE OPERATOR = (
@@ -143,7 +143,7 @@ CREATE OPERATOR = (
 
 CREATE OR REPLACE FUNCTION semver_ne(semver, semver)
 	RETURNS bool
-	AS 'semver'
+	AS 'MODULE_PATHNAME'
 	LANGUAGE C STRICT IMMUTABLE;
 
 CREATE OPERATOR <> (
@@ -157,7 +157,7 @@ CREATE OPERATOR <> (
 
 CREATE OR REPLACE FUNCTION semver_le(semver, semver)
 	RETURNS bool
-	AS 'semver'
+	AS 'MODULE_PATHNAME'
 	LANGUAGE C STRICT IMMUTABLE;
 
 CREATE OPERATOR <= (
@@ -169,7 +169,7 @@ CREATE OPERATOR <= (
 
 CREATE OR REPLACE FUNCTION semver_lt(semver, semver)
 	RETURNS bool
-	AS 'semver'
+	AS 'MODULE_PATHNAME'
 	LANGUAGE C STRICT IMMUTABLE;
 
 CREATE OPERATOR < (
@@ -181,7 +181,7 @@ CREATE OPERATOR < (
 
 CREATE OR REPLACE FUNCTION semver_ge(semver, semver)
 	RETURNS bool
-	AS 'semver'
+	AS 'MODULE_PATHNAME'
 	LANGUAGE C STRICT IMMUTABLE;
 
 CREATE OPERATOR >= (
@@ -193,7 +193,7 @@ CREATE OPERATOR >= (
 
 CREATE OR REPLACE FUNCTION semver_gt(semver, semver)
 	RETURNS bool
-	AS 'semver'
+	AS 'MODULE_PATHNAME'
 	LANGUAGE C STRICT IMMUTABLE;
 
 CREATE OPERATOR > (
@@ -209,12 +209,12 @@ CREATE OPERATOR > (
 
 CREATE OR REPLACE FUNCTION semver_cmp(semver, semver)
 	RETURNS int4
-	AS 'semver'
+	AS 'MODULE_PATHNAME'
 	LANGUAGE C STRICT IMMUTABLE;
 
 CREATE OR REPLACE FUNCTION hash_semver(semver)
 	RETURNS int4
-	AS 'semver'
+	AS 'MODULE_PATHNAME'
 	LANGUAGE C STRICT IMMUTABLE;
 
 --
@@ -245,7 +245,7 @@ DEFAULT FOR TYPE semver USING hash AS
 
 CREATE OR REPLACE FUNCTION semver_smaller(semver, semver)
 	RETURNS semver
-	AS 'semver'
+	AS 'MODULE_PATHNAME'
 	LANGUAGE C STRICT IMMUTABLE;
 
 CREATE AGGREGATE min(semver)  (
@@ -256,7 +256,7 @@ CREATE AGGREGATE min(semver)  (
 
 CREATE OR REPLACE FUNCTION semver_larger(semver, semver)
 	RETURNS semver
-	AS 'semver'
+	AS 'MODULE_PATHNAME'
 	LANGUAGE C STRICT IMMUTABLE;
 
 CREATE AGGREGATE max(semver)  (
@@ -271,7 +271,7 @@ CREATE AGGREGATE max(semver)  (
 
 CREATE OR REPLACE FUNCTION is_semver(text)
 	RETURNS bool
-	AS 'semver'
+	AS 'MODULE_PATHNAME'
 	LANGUAGE C STRICT IMMUTABLE;
 
 --
@@ -280,22 +280,22 @@ CREATE OR REPLACE FUNCTION is_semver(text)
 
 CREATE OR REPLACE FUNCTION get_semver_major(semver)
 	RETURNS int4
-	AS 'semver'
+	AS 'MODULE_PATHNAME'
 	LANGUAGE C STRICT IMMUTABLE;
 
 CREATE OR REPLACE FUNCTION get_semver_minor(semver)
 	RETURNS int4
-	AS 'semver'
+	AS 'MODULE_PATHNAME'
 	LANGUAGE C STRICT IMMUTABLE;
 
 CREATE OR REPLACE FUNCTION get_semver_patch(semver)
 	RETURNS int4
-	AS 'semver'
+	AS 'MODULE_PATHNAME'
 	LANGUAGE C STRICT IMMUTABLE;
 
 CREATE OR REPLACE FUNCTION get_semver_prerelease(semver)
         RETURNS text
-        AS 'semver'
+        AS 'MODULE_PATHNAME'
         LANGUAGE C STRICT IMMUTABLE;
 
 CREATE TYPE semverrange AS RANGE (SUBTYPE = semver);
diff --git a/src/semver.c b/src/github.com+theory+pg-semver.c
similarity index 100%
rename from src/semver.c
rename to src/github.com+theory+pg-semver.c
diff --git a/test/sql/base.sql b/test/sql/base.sql
index af599d8..e471e74 100644
--- a/test/sql/base.sql
+++ b/test/sql/base.sql
@@ -2,7 +2,7 @@
 BEGIN;
 
 \i test/pgtap-core.sql
-\i sql/semver.sql
+CREATE EXTENSION "github.com+theory+pg-semver";
 
 SELECT plan(334);
 --SELECT * FROM no_plan();
diff --git a/test/sql/corpus.sql b/test/sql/corpus.sql
index 1f5f637..cdc8881 100644
--- a/test/sql/corpus.sql
+++ b/test/sql/corpus.sql
@@ -4,7 +4,7 @@ BEGIN;
 -- Test the SemVer corpus from https://regex101.com/r/Ly7O1x/3/.
 
 \i test/pgtap-core.sql
-\i sql/semver.sql
+CREATE EXTENSION "github.com+theory+pg-semver";
 
 SELECT plan(71);
 --SELECT * FROM no_plan();