refactor: implement script type in standalone crate

Cargo.toml

@@ -1,5 +1,5 @@
 [workspace]
-members = ["rust-tests", "crates/rattler_build_recipe_generator"]
+members = ["rust-tests", "crates/rattler_build_recipe_generator", "crates/rattler_build_script"]
 
 [workspace.package]
 authors = ["rattler-build contributors <[email protected]>"]
@@ -12,16 +12,20 @@ repository = "https://github.com/prefix-dev/rattler-build"
 async-once-cell = "0.5.4"
 async-recursion = "1.1.1"
 clap = { version = "4.5.45", features = ["derive"] }
+console = { version = "0.16.1", features = ["windows-console-colors"] }
 flate2 = "1.1.2"
 fs-err = "3.1.1"
+futures = "0.3.31"
 indexmap = "2.11.4"
 insta = "1.41.1"
 itertools = "0.14.0"
 miette = "7.6.0"
+minijinja = { version = "2.11.0", features = ["unstable_machinery", "custom_syntax"] }
 rattler_conda_types = { version = "0.40.0", default-features = false }
 rattler_digest = { version = "1.1.5", default-features = false, features = [
   "serde",
 ] }
+rattler_shell = { version = "0.25.2", default-features = false, features = ["sysinfo"] }
 regex = "1.11.1"
 reqwest = { version = "0.12.23", default-features = false, features = ["json"] }
 serde = { version = "1.0.219", features = ["derive"] }
@@ -31,10 +35,13 @@ serde_yaml = "0.9.34"
 sha2 = "0.10.9"
 tar = "0.4.44"
 tempfile = "3.21.0"
+thiserror = "2.0.17"
 tokio = { version = "1.47.1", features = ["rt", "macros"] }
+tokio-util = { version = "0.7.16", features = ["codec", "compat"] }
 toml = "0.9.5"
 tracing = "0.1.41"
 url = "2.5.4"
+which = "8.0.0"
 zip = { version = "5.1.1", default-features = false, features = ["deflate"] }
 
 [package]
@@ -111,10 +118,7 @@ serde_with = { workspace = true }
 url = { workspace = true }
 tracing = { workspace = true }
 clap = { workspace = true, features = ["env", "cargo"] }
-minijinja = { version = "2.11.0", features = [
-  "unstable_machinery",
-  "custom_syntax",
-] }
+minijinja = { workspace = true }
 tracing-subscriber = { version = "0.3.19", features = [
   "env-filter",
   "fmt",
@@ -128,10 +132,10 @@ goblin = "0.10.1"
 scroll = "0.13.0"
 pathdiff = "0.2.3"
 comfy-table = "7.1.4"
-futures = "0.3.31"
+futures = { workspace = true }
 indicatif = { version = "0.18.0", features = ["in_memory"] }
-console = { version = "0.16.1", features = ["windows-console-colors"] }
-thiserror = "2.0.17"
+console = { workspace = true }
+thiserror = { workspace = true }
 tempfile = { workspace = true }
 chrono = "0.4.41"
 sha1 = "0.10.6"
@@ -144,10 +148,10 @@ petgraph = "0.8.2"
 indexmap = { workspace = true }
 dunce = "1.0.5"
 fs-err = { workspace = true }
-which = "8.0.0"
+which = { workspace = true }
 clap_complete = "4.5.57"
 clap_complete_nushell = "4.5.8"
-tokio-util = { version = "0.7.16", features = ["codec", "compat"] }
+tokio-util = { workspace = true }
 
 tar = { workspace = true }
 zip = { workspace = true }
@@ -196,9 +200,7 @@ rattler_redaction = { version = "0.1.12" }
 rattler_repodata_gateway = { version = "0.24.7", default-features = false, features = [
   "gateway",
 ] }
-rattler_shell = { version = "0.25.2", default-features = false, features = [
-  "sysinfo",
-] }
+rattler_shell = { workspace = true }
 rattler_solve = { version = "3.0.5", default-features = false, features = [
   "resolvo",
   "serde",
@@ -223,6 +225,7 @@ dialoguer = "0.12.0"
 rattler_build_recipe_generator = { path = "crates/rattler_build_recipe_generator", optional = true, features = [
   "cli",
 ] }
+rattler_build_script = { path = "crates/rattler_build_script" }
 
 [target.'cfg(not(target_os = "windows"))'.dependencies]
 sha2 = { workspace = true, features = ["asm"] }

crates/rattler_build_script/Cargo.toml

@@ -0,0 +1,52 @@
+[package]
+name = "rattler_build_script"
+version = "0.1.0"
+authors.workspace = true
+edition.workspace = true
+license.workspace = true
+readme = "README.md"
+repository.workspace = true
+description = "Script execution and data model for rattler-build"
+
+[features]
+default = ["execution"]
+execution = [
+    "itertools",
+    "thiserror",
+    "tracing",
+    "futures",
+    "tokio",
+    "tokio-util",
+    "rattler_conda_types",
+    "rattler_shell",
+    "fs-err",
+    "which",
+    "minijinja",
+]
+
+[dependencies]
+# Core dependencies (always needed)
+indexmap = { workspace = true }
+serde = { workspace = true }
+
+# Sandbox dependencies
+console = { workspace = true }
+clap = { workspace = true }
+
+# Execution dependencies (optional)
+itertools = { workspace = true, optional = true }
+thiserror = { workspace = true, optional = true }
+tracing = { workspace = true, optional = true }
+futures = { workspace = true, optional = true }
+tokio = { workspace = true, features = ["process", "io-util", "fs"], optional = true }
+tokio-util = { workspace = true, optional = true }
+rattler_conda_types = { workspace = true, optional = true }
+rattler_shell = { workspace = true, optional = true }
+fs-err = { workspace = true, optional = true }
+which = { workspace = true, optional = true }
+minijinja = { workspace = true, optional = true }
+
+[dev-dependencies]
+tokio = { workspace = true, features = ["rt", "macros", "fs"] }
+insta = { workspace = true, features = ["yaml"] }
+serde_yaml = { workspace = true }