The cache is supposed to take note of the `POLLEN` environment variable, but due to the spurious `string-downcase` here, was instead looking at `pollen`, which is a different key on case-sensitive systems. Windows environment variables are not case-sensitive, but it seems Racket’s `getenv` function will handle the case conversion as needed.
When recursive mode is used, `current-project-root` changes during the extent of a render operation. But if parallel rendering is also used, when the main thread re-parameterizes `current-project-root`, it will have no effect on the parallel threads, because they freshly instantiate `current-project-root` (with its default value). This patch moves the parameterization inside the parallel thread by passing the `current-project-root` value as part of the job message, thereby handling it the same way as `current-poly-target`.
* Specify external renderer via module and id
* faster external render check
* Update render.rkt
* rely on default exception messages, which are informative
Pagetree promises that its nodes will be resolved relative to the directory where the pagetree lives. For path-based pagetrees, make sure this directory is set correctly.
Clarify three things:
1. You can use pagetree files with `raco pollen render`
2. `--target` doesn’t prevent other file types from being rendered
3. The generated pagetree includes more than just source files
* start command: fix default value for port
Defaulting the port to "8080" at the `command-line' level breaks
customization via `pollen.rkt'.
* test-project-port: connect to server to verify that it's up
Joel Dueck