Add files feature to agama-utils making curl optional

Due to a dependency chain agama-network pulls in curl via agama-network ->
agama-utils -> agama-transfer -> curl. With this comes a dependency on openssl
which unfortunately for wicked2nm is a problem, because it fails to build on
older SLE 15 SPs.
To circumvent this I added a default feature that excludes the affected parts
from agama-network so it doesn't depend on agama-transfer.
This should have no actual impact on agama itself.

Author: jcronenberg

rust/agama-network/Cargo.toml

@@ -5,7 +5,7 @@ rust-version.workspace = true
 edition.workspace = true
 
 [dependencies]
-agama-utils = { path = "../agama-utils" }
+agama-utils = { path = "../agama-utils", default-features = false }
 anyhow = "1.0.98"
 async-trait = "0.1.88"
 cidr = { version = "0.3.1", features = ["serde"] }

rust/agama-utils/Cargo.toml

@@ -4,9 +4,13 @@ version = "0.1.0"
 rust-version.workspace = true
 edition.workspace = true
 
+[features]
+default = ["files"]
+files = ["dep:agama-transfer"]
+
 [dependencies]
 agama-locale-data = { path = "../agama-locale-data" }
-agama-transfer = { path = "../agama-transfer" }
+agama-transfer = { path = "../agama-transfer", optional = true }
 async-trait = "0.1.89"
 camino = "1.2.1"
 serde = { version = "1.0.228", features = ["derive"] }

rust/agama-utils/src/api.rs

@@ -39,13 +39,17 @@ pub use issue::{Issue, IssueMap, IssueWithScope};
 mod system_info;
 pub use system_info::SystemInfo;
 
+#[cfg(feature = "files")]
 pub mod config;
+#[cfg(feature = "files")]
 pub use config::Config;
 
 mod raw_config;
 pub use raw_config::RawConfig;
 
+#[cfg(feature = "files")]
 pub mod patch;
+#[cfg(feature = "files")]
 pub use patch::Patch;
 
 mod proposal;
@@ -55,6 +59,7 @@ mod action;
 pub use {action::Action, action::FinishMethod};
 
 pub mod bootloader;
+#[cfg(feature = "files")]
 pub mod files;
 pub mod hostname;
 pub mod iscsi;