refactor!: change the polars_info() output structure

NEWS.md

@@ -32,6 +32,13 @@
         Their behaviour doesn't change. 
     -   `include_bounds` is renamed `closed` and must be one of `"left"`, 
         `"right"`, `"both"`, or `"none"`.
+-   `polars_info()` returns a slightly changed list.
+    -   `$threadpool_size`, which means the number of threads used by Polars,
+        is changed to `$thread_pool_size` (#784)
+    -   `$version`, which indicates the version of this package,
+        is changed to `$versions$r_package` (#791).
+    -   `$rust_polars`, which indicates the version of the dependent Rust Polars,
+        is changed to `$versions$rust_crate` (#791).
 
 ### Deprecations
 

R/polars_info.R

@@ -1,7 +1,7 @@
 #' Report information of the package
 #'
 #' This function reports the following information:
-#' - Package versions (the R package version and the dependent Rust Polars version)
+#' - Package versions (the Polars R package version and the dependent Rust Polars crate version)
 #' - [Number of threads used by Polars][pl_thread_pool_size]
 #' - Rust feature flags (See `vignette("install", "polars")` for details)
 #' @return A list with information of the package
@@ -15,8 +15,10 @@
 polars_info = function() {
   # Similar to arrow::arrow_info()
   out = list(
-    version = utils::packageVersion("polars"),
-    rust_polars = rust_polars_version(),
+    versions = list(
+      r_package = utils::packageVersion("polars"),
+      rust_crate = rust_polars_version()
+    ),
     thread_pool_size = thread_pool_size(),
     features = cargo_rpolars_feature_info()
   )
@@ -38,8 +40,8 @@ print.polars_info = function(x, ...) {
     cat("\n")
   }
 
-  cat("r-polars package version : ", format(x$version), "\n", sep = "")
-  cat("rust-polars crate version: ", format(x$rust_polars), "\n", sep = "")
+  cat("Polars R package version : ", format(x$versions$r_package), "\n", sep = "")
+  cat("Rust Polars crate version: ", format(x$versions$rust_crate), "\n", sep = "")
   cat("\n")
   cat("Thread pool size:", x$thread_pool_size, "\n")
   cat("\n")

tests/testthat/_snaps/polars_info.md

@@ -3,8 +3,8 @@
     Code
       info
     Output
-      r-polars package version : 999.999.999
-      rust-polars crate version: 999.999.999
+      Polars R package version : 999.999.999
+      Rust Polars crate version: 999.999.999
       
       Thread pool size: 1 
       

tests/testthat/test-polars_info.R

@@ -10,8 +10,8 @@ test_that("print polars_info()", {
   info = polars_info()
 
   # Ensure static version for snapshot test
-  info$version = package_version("999.999.999")
-  info$rust_polars = package_version("999.999.999")
+  info$versions$r_package = package_version("999.999.999")
+  info$versions$rust_crate = package_version("999.999.999")
 
   # Ensure the thread_pool_size is 1 for snapshot test
   info$thread_pool_size = 1