feat: show PRQL version in long about (in --help option)

Author: eitsupi

Cargo.toml

@@ -21,7 +21,7 @@ atty = "0.2"
 camino = "1.1.1"
 cfg-if = "1.0.0"
 chrono = "0.4"
-clap = { version = "4.1.4", features = ["derive", "env"] }
+clap = { version = "4.1.4", features = ["derive", "env", "string"] }
 datafusion = { version = "12.0.0", optional = true, features = ["default", "avro"]}
 dotenvy = "0.15.3"
 duckdb = { version = "0.5.1", features = ["bundled", "modern-full"], optional = true }

src/main.rs

@@ -12,7 +12,7 @@ use std::io::prelude::*;
 use std::{fs, io};
 
 use clap::{Parser, ValueEnum};
-use prql_compiler::compile;
+use prql_compiler::{compile, PRQL_VERSION};
 
 cfg_if::cfg_if! {
     if #[cfg(feature = "datafusion")] {
@@ -33,7 +33,8 @@ type SourcesType = Vec<(String, String)>;
 #[clap(
     name = env!("CARGO_PKG_NAME"),
     version = env!("CARGO_PKG_VERSION"),
-    about = env!("CARGO_PKG_DESCRIPTION")
+    about = env!("CARGO_PKG_DESCRIPTION"),
+    long_about = format!("pq: query and transform data with PRQL version {} (https://prql-lang.org)", PRQL_VERSION.to_string())
 )]
 struct Cli {
     /// The file(s) to read data FROM if given