diff --git a/projects/modernc.org/goyacc/README.md b/projects/modernc.org/goyacc/README.md
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+Goyacc is a version of yacc generating Go programs.
diff --git a/projects/modernc.org/goyacc/package.yml b/projects/modernc.org/goyacc/package.yml
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+distributable:
+  url: https://gitlab.com/cznic/goyacc/-/archive/{{version.tag}}/{{version.tag}}.tar.gz
+  strip-components: 1
+
+display-name: modernc.org/goyacc
+
+versions:
+  gitlab: cznic/goyacc/tags
+
+build:
+  dependencies:
+    go.dev: ~1.19
+  env:
+    CGO_ENABLED: 0
+    GO_LDFLAGS:
+      - -s
+      - -w
+    linux:
+      GO_LDFLAGS:
+        - -buildmode=pie
+  script:
+    - go build -v -ldflags="${GO_LDFLAGS}" -o "{{ prefix }}"/bin/goyacc
+    - go test
+
+provides:
+  - bin/goyacc
+
+test:
+  - run: goyacc -o test.go $FIXTURE
+    fixture:
+      extname: y
+      content: |
+        %{
+        package main
+        %}
+
+        %union { val int }
+        %token <val> NUM
+        %type <val> expr term factor
+
+        %%
+        expr : expr '+' term { $$ = $1 + $3; }
+            | term          { $$ = $1; }
+            ;
+        term : term '*' factor { $$ = $1 * $3; }
+            | factor          { $$ = $1; }
+            ;
+        factor : '(' expr ')'  { $$ = $2; }
+              | NUM           { $$ = $1; }
+              ;
+        %%
+  - grep 'package main' test.go