These variables will be set by the server:
-```
+```bash
WEBI_PKG=example@v1
-WEBI_NAME=example
WEBI_TAG=v1
WEBI_HOST=https://webinstall.dev
WEBI_RELEASES=https://webinstall.dev/api/releases/example@v1?os=macos&arch=amd64&pretty=true
WEBI_PKG_FILE=example-macos-amd64.tar.gz
```
+```bash
+PKG_NAME=example
+PKG_OSES=macos,linux,windows
+PKG_ARCHES=amd64,arm64,x86
+PKG_FORMATS=zip,xz
+```
+
```bash
WEBI_TMP=${WEBI_TMP:-"$(mktemp -d -t webinstall-foobar.XXXXXXXX)"}
WEBI_SINGLE=""