update readme

README.md

@@ -13,57 +13,10 @@ install.packages("duckdb")
 The default build compiles a release version from an amalgamation.
 
 ```sh
-cd tools/rpkg
 R CMD INSTALL .
 ```
 
-Optional extensions can be enabled by passing them (comma-separated, if there is more than one) to the environment variable `DUCKDB_R_EXTENSIONS`:
 
-```sh
-DUCKDB_R_EXTENSIONS=tpch R CMD INSTALL .
-```
-
-## Development
-
-To build the R package, you first need to install the dependencies, these are located in `tools/rpkg/dependencies.R`
-Navigate over to the `tools/rpkg` folder and run `Rscript dependencies.R`
-
-For development, setting the `DUCKDB_R_DEBUG` environment variable enables incremental debugging builds for the R package.
-
-```sh
-cd tools/rpkg
-DUCKDB_R_DEBUG=1 R CMD INSTALL .
-```
-
-This also works for devtools:
-
-```r
-Sys.setenv(DUCKDB_R_DEBUG = "1")
-pkgload::load_all()
-```
-
-Add the following to your `.Renviron` to make this the default:
-
-```
-DUCKDB_R_DEBUG=1
-```
-
-If you do this, remember to use `--vanilla` for building release builds.
+## Dependencies
 
-### Developing with Extensions
-If you wish to build or add extensions to the R package you first need to build duckdb with the 
-`extension_static_build` flag and move the desired extension to a location where it won't be 
-modified by other build scripts. The following commands allow you to add the httpfs extension to 
-a duckdb R build. See the [extension ReadMe](https://github.com/duckdb/duckdb/tree/main/extension#readme) for more 
-information about extensions 
-```sh
-cd duckdb/
-EXTENSION_STATIC_BUILD=1 make
-mv ./build/release/extension/httpfs/httpfs.duckdb_extension {{untouched_path}}/httpfs-extension.duckdb_extension
-```
-Then in R
-```r
-library(“duckdb”)
-con <- DBI::dbConnect(duckdb(config=list(“allow_unsigned_extensions”=“true”)))
-dbExecute(con, “LOAD {{untouched_path}}/httpfs-extension.duckdb_extension")
-```
+To build the R package, you first need to install the dependencies. Just run run `R -f dependencies.R`