Error: variable `impl` cannot be modified at compile time

[Steven Schveighoffer]

On 5/13/22 3:46 PM, Steven Schveighoffer wrote:
> 
> What writeln? Your compile trace is missing the original call line, and 
> I would say probably more.

Looking at your last commit, I figured it out:

https://github.com/kerisy/archttp/blob/545b3eb738261e92c88b4e4bb664b4fdfb206398/source/archttp/codec/HttpDecoder.d#L31

That's where you are attempting to build an HttpRequestParser at compile 
time.

Just use the `__ctfe` trick.

-Steve