diff --git a/manifest.json b/manifest.json
index efb7f23..2ec815d 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,5 +1,6 @@
 {
   "provides" : "schrift",
+  "sources": ["."],
   "targets" : {
     "linux-x64" : {
       "dependencies" : [],
diff --git a/project.json b/project.json
deleted file mode 100644
index 92b049c..0000000
--- a/project.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-  "langrev": "1",
-  "warnings": [ "no-unused" ],
-  "dependency-search-paths": [ ".." ],
-  "dependencies": [ "schrift" ],
-  "authors": [ "Alessandro Mauri <alemauri001@gmail.com>", "Thomas Oltmann <thomas.oltmann.hhg@gmail.com>" ],
-  "version": "0.1.0",
-  "sources": [ ],
-  "output": "build",
-  "target": "linux-x64",
-  "features": [],
-  "cpu": "generic",
-  "opt": "O0",
-}
diff --git a/libschrift.c3 b/schrift.c3i
similarity index 63%
rename from libschrift.c3
rename to schrift.c3i
index 699d296..b296392 100644
--- a/libschrift.c3
+++ b/schrift.c3i
@@ -45,14 +45,14 @@ struct SftImage
 	int   height;
 }
 
-extern fn ZString sft_version() @extern("sft_version");
+extern fn ZString sft_version() @cname("sft_version");
 
-extern fn SftFont loadmem(void* mem, usz size) @extern("sft_loadmem");
-extern fn SftFont loadfile(ZString filename) @extern("sft_loadfile");
-extern fn void freefont(SftFont font) @extern("sft_freefont");
+extern fn SftFont loadmem(void* mem, usz size) @cname("sft_loadmem");
+extern fn SftFont loadfile(ZString filename) @cname("sft_loadfile");
+extern fn void freefont(SftFont font) @cname("sft_freefont");
 
-extern fn int lmetrics(Sft* sft, SftLMetrics* metrics) @extern("sft_lmetrics");
-extern fn int lookup(Sft* sft, SftUChar codepoint, SftGlyph* glyph) @extern("sft_lookup");
-extern fn int gmetrics(Sft* sft, SftGlyph glyph, SftGMetrics* metrics) @extern("sft_gmetrics");
-extern fn int kerning(Sft* sft, SftGlyph leftGlyph, SftGlyph rightGlyph, SftKerning* kerning) @extern("sft_kerning");
-extern fn int render(Sft* sft, SftGlyph glyph, SftImage image) @extern("sft_render");
+extern fn int lmetrics(Sft* sft, SftLMetrics* metrics) @cname("sft_lmetrics");
+extern fn int lookup(Sft* sft, SftUChar codepoint, SftGlyph* glyph) @cname("sft_lookup");
+extern fn int gmetrics(Sft* sft, SftGlyph glyph, SftGMetrics* metrics) @cname("sft_gmetrics");
+extern fn int kerning(Sft* sft, SftGlyph leftGlyph, SftGlyph rightGlyph, SftKerning* kerning) @cname("sft_kerning");
+extern fn int render(Sft* sft, SftGlyph glyph, SftImage image) @cname("sft_render");