The polars package can be installed from R-multiverse.
Some platforms can install pre-compiled binaries, and others will need to build from source.
Installing the latest release version.
Sys.setenv(NOT_CRAN = "true") # Enable installation with pre-built Rust library binary, or enable Rust caching
install.packages("polars", repos = "https://community.r-multiverse.org")
Installing from the GitHub repository can be done using the
{remotes}
package’s functions.
If one of the following environment variables is set, a pre-built Rust library binary will be tried to be used before building the Rust source.
NOT_CRAN="true"
MY_UNIVERSE
is not empty (This environment variable is
set by R-universe)LIBR_POLARS_BUILD="false"
(This is prioritized, so if
you want to force a source build, set
LIBR_POLARS_BUILD="true"
)By default, the pre-built Rust library binary is downloaded from the
URL recorded in tools/lib-sums.tsv
. If
tools/lib-sums.tsv
does not exist, or the corresponding URL
does not exist, or the hash of the downloaded file does not match the
recorded one, it falls back to building from source.
If you want to use a pre-built Rust library binary that exists
locally, set the LIBR_POLARS_PATH
environment variable to
the path to the binary. For example (on Bash):
r-polars Rust library has some feature flags that affect the R package features. These flags are set at compile time, and cannot be changed at runtime.
The features enabled in the compiled Rust library are shown by the
polars_info()
function.
library(polars)
polars_info()
#> Polars R package version : 1.1.0
#> Rust Polars crate version: 0.49.1
#>
#> Thread pool size: 4
#>
#> Features:
#> nightly TRUE
At this time, the following environment variables can be used to change the Rust library build time options.
The feature flags can be set by the LIBR_POLARS_FEATURES
environment variable, which will be passed to the
--features
option of the cargo build
command.
For example, to enable the nightly
feature, set the
environment variable as like
LIBR_POLARS_FEATURES="nightly"
.
nightly
for nightly toolchain features and SIMD. If
this feature is enabled, the nightly Rust toolchain will be downloaded
and used. (By the src/rust/rust-toolchain.toml
file)The profile can be set by the LIBR_POLARS_PROFILE
environment variable. For example, to build with more optimization, set
the environment variable as like
LIBR_POLARS_PROFILE="dist-release"
.
The minimum supported Rust version (MSRV) is declared in the
src/rust/Cargo.toml
file’s
package.rust-version
field.
This MSRV is for the default features. For other features, the nightly Rust toolchain is required.