Read placeholders from cargo-generate.toml

xtask/Cargo.toml

@@ -7,7 +7,11 @@ edition = "2024"
 [dependencies]
 anyhow = "1.0.100"
 clap = { version = "4.5.53", features = ["derive"] }
-strum = { version = "0.27.2", features = ["derive"] }
 log = "0.4.28"
 env_logger = "0.11.8"
+
+# deps below are copied from `cargo-generate`
 cargo-generate = { version = "0.23.7", default-features = false, features = [] }
+serde = { version = "~1.0", features = ["derive"] }
+toml = { version = "~0.9", features = ["preserve_order"] }
+indexmap = { version = "~2", features = ["serde"] }

xtask/src/cargo_generate_config.rs

@@ -0,0 +1,28 @@
+//! These definitions are copied from `cargo_generate::config`, since that interface isn't pub.
+//! Only keys we need are kept.
+
+use indexmap::IndexMap;
+use serde::Deserialize;
+use std::collections::HashMap;
+
+pub const CONFIG_FILE_NAME: &str = "cargo-generate.toml";
+
+#[derive(Deserialize, Debug, PartialEq, Default, Clone)]
+pub struct Config {
+    pub template: Option<TemplateConfig>,
+    pub placeholders: Option<TemplateSlotsTable>,
+    pub conditional: Option<HashMap<String, ConditionalConfig>>,
+}
+
+#[derive(Deserialize, Debug, PartialEq, Eq, Default, Clone)]
+pub struct TemplateConfig {
+    pub sub_templates: Option<Vec<String>>,
+}
+
+#[derive(Deserialize, Debug, PartialEq, Clone)]
+pub struct ConditionalConfig {
+    pub placeholders: Option<TemplateSlotsTable>,
+}
+
+#[derive(Deserialize, Debug, PartialEq, Clone, Default)]
+pub struct TemplateSlotsTable(pub IndexMap<String, toml::Value>);