!!! unmaintained (4yo)

cargo-script (part of cargo-extras)
https://crates.io/crates/cargo-script
https://github.com/DanielKeep/cargo-script

2020
https://neosmart.net/blog/2020/self-compiling-rust-code/

inst
  Installing .../.cargo/bin/cargo-script
  Installing .../.cargo/bin/run-cargo-script

folders
.../.cargo/script-cache
.../.cargo/script-templates

USAGE:
    cargo script [FLAGS OPTIONS] [--] <script> <args>...

FLAGS:
        --bench           Compile and run benchmarks.  Requires a nightly toolchain.
        --build-only      Build the script, but don't run it.
        --clear-cache     Clears out the script cache.
        --count           Invoke the loop closure with two arguments: line, and line number.
        --debug           Build a debug executable, not an optimised one.
    -e, --expr            Execute <script> as a literal expression and display the result.
        --force           Force the script to be rebuilt.
        --gen-pkg-only    Generate the Cargo package, but don't compile or run it.
    -h, --help            Prints help information
    -l, --loop            Execute <script> as a literal closure once for each line from stdin.
        --test            Compile and run tests.
    -V, --version         Prints version information

OPTIONS:
    -d, --dep <dep>...
            Add an additional Cargo dependency.  Each SPEC can be either just the package name (which will assume the
            latest version) or a full `name=version` spec.
    -D, --dep-extern <dep_extern>...
            Like `dep`, except that it *also* adds a `#[macro_use] extern crate name;` item for expression and loop
            scripts.  Note that this only works if the name of the dependency and the name of the library it generates
            are exactly the same.
    -x, --extern <extern>...
            Adds an `#[macro_use] extern crate name;` item for expressions and loop scripts.

        --features <features>                        Cargo features to pass when building and running.
        --migrate-data <migrate_data>                Migrate data from older versions. [values: dry-run, for-real]
        --pkg-path <pkg_path>                        Specify where to place the generated Cargo package.
    -t, --template <template>                        Specify a template to use for expression scripts.
    -u, --unstable-feature <unstable_features>...    Add a #![feature] declaration to the crate.
        --use-shared-binary-cache <use_bincache>
            Override whether or not the shared binary cache will be used for compilation. [values: no, yes]


ARGS:
    <script>     Script file (with or without extension) to execute.
    <args>...    Additional arguments passed to the script.


cargo-script
    templates
        list
        show
            show the folder in which they should be stored