[#73] Adds build.rs to generate a default config template with tool version

build.rs

@@ -0,0 +1,62 @@
+use std::fs;
+use std::io::Result;
+
+const TEMPLATE_TEMPLATE: &str = r##"
+# # tool-sync default configuration file
+# https://github.com/chshersh/tool-sync
+# This file was automatically generated by tool-sync
+#####################################################
+#
+#
+# store_directory = "$HOME/.local/bin"
+#
+# tool-sync provides native support for some of the tools without the need to configure them
+# Uncomment the tools you want to have them
+#
+# [bat]
+# [difftastic]
+# [fd]
+# [ripgrep]
+#
+# To add configuration for other tools these are the config options:
+# [ripgrep]
+#        owner     = "BurntSushi"
+#        repo      = "ripgrep"
+#        exe_name  = "rg"
+#
+#        # Uncomment to download a specific version or tag.
+#        # Without this tag latest will be used
+#        # tag       = "13.0.0"
+#
+#
+# Asset name to download on linux OSes
+# asset_name.linux = "x86_64-unknown-linux-musl"
+#
+# uncomment if you want to install on macOS as well
+# asset_name.macos = "apple-darwin"
+#
+# uncomment if you want to install on Windows as well
+# asset_name.windows = "x86_64-pc-windows-msvc"
+"##;
+
+fn main() -> Result<()> {
+    let s = format_template();
+    fs::write("src/config/template.rs", s)?;
+
+    Ok(())
+}
+
+fn format_template() -> String {
+    let current_version = std::env::var("CARGO_PKG_VERSION").unwrap();
+
+    format!(
+        r####"/// This file only holds the template that is used to generate a default .tools.toml.
+// This file is generated by the build.rs script. If you want to edit this file change the template
+// there.
+
+pub const CONFIG_TEMPLATE: &str = r##"# This config file was generated for version {}
+#{}"##;
+"####,
+        current_version, TEMPLATE_TEMPLATE
+    )
+}

src/config/template.rs

@@ -1,6 +1,10 @@
 /// This file only holds the template that is used to generate a default .tools.toml.
+// This file is generated by the build.rs script. If you want to edit this file change the template
+// there.
 
-pub const CONFIG_TEMPLATE: &str = r##"# # tool-sync default configuration file
+pub const CONFIG_TEMPLATE: &str = r##"# This config file was generated for version 0.1.0
+#
+# # tool-sync default configuration file
 # https://github.com/chshersh/tool-sync
 # This file was automatically generated by tool-sync
 #####################################################