during addUnifs
position: "./tests/reject/accumulate03.lc" (line 11, column 23) - "./tests/reject/accumulate03.lc" (line 11, column 68)
  frame             = Accumulate fragmentCtx PassAll fragmentShader fragmentStream emptyFB
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
cannot unify (Color (Vec 4 t00066),Color t00067)
with Color Float
----------- equations
~~~
t00062 -> FragmentOut (Color (Vec 4 t00066),Color t00067)
t00072 -> FragmentOut (Color Float)