feat: add bootc support to Fedora atomic distros

* feat(bootc): add Bootc support + docs

Co-authored-by: Steve Lau <stevelauc@outlook.com>

* docs(bootc): specify that itll supercede rpm-ostree if enabled :p

---------

Co-authored-by: Steve Lau <stevelauc@outlook.com>

config.example.toml

@@ -172,6 +172,11 @@
 
 # rpm_ostree = false
 
+# For Fedora/CentOS/RHEL Atomic variants, if `bootc` is available and this configuration entry is set to true, use
+# it to do the update - Will also supercede rpm-ostree if enabled
+# (default: false)
+# bootc = false
+
 # nix_arguments = "--flake"
 
 # nix_env_arguments = "--prebuilt-only"

src/config.rs

@@ -358,6 +358,7 @@ pub struct Linux {
     redhat_distro_sync: Option<bool>,
     suse_dup: Option<bool>,
     rpm_ostree: Option<bool>,
+    bootc: Option<bool>,
 
     #[merge(strategy = crate::utils::merge_strategies::string_append_opt)]
     emerge_sync_flags: Option<String>,
@@ -1457,6 +1458,15 @@ impl Config {
             .unwrap_or(false)
     }
 
+    /// Use bootc in *when bootc is detected* (default: false)
+    pub fn bootc(&self) -> bool {
+        self.config_file
+            .linux
+            .as_ref()
+            .and_then(|linux| linux.bootc)
+            .unwrap_or(false)
+    }
+
     /// Determine if we should ignore failures for this step
     pub fn ignore_failure(&self, step: Step) -> bool {
         self.config_file

src/steps/os/linux.rs

@@ -225,7 +225,12 @@ fn upgrade_wolfi_linux(ctx: &ExecutionContext) -> Result<()> {
 }
 
 fn upgrade_redhat(ctx: &ExecutionContext) -> Result<()> {
-    if let Some(ostree) = which("rpm-ostree") {
+    if let Some(bootc) = which("bootc") {
+        if ctx.config().bootc() {
+            let sudo = require_option(ctx.sudo().as_ref(), get_require_sudo_string())?;
+            return ctx.run_type().execute(sudo).arg(&bootc).arg("upgrade").status_checked();
+        }
+    } else if let Some(ostree) = which("rpm-ostree") {
         if ctx.config().rpm_ostree() {
             let mut command = ctx.run_type().execute(ostree);
             command.arg("upgrade");
@@ -298,6 +303,13 @@ fn upgrade_nilrt(ctx: &ExecutionContext) -> Result<()> {
 }
 
 fn upgrade_fedora_immutable(ctx: &ExecutionContext) -> Result<()> {
+    if let Some(bootc) = which("bootc") {
+        if ctx.config().bootc() {
+            let sudo = require_option(ctx.sudo().as_ref(), get_require_sudo_string())?;
+            return ctx.run_type().execute(sudo).arg(&bootc).arg("upgrade").status_checked();
+        }
+    }
+
     let ostree = require("rpm-ostree")?;
     let mut command = ctx.run_type().execute(ostree);
     command.arg("upgrade");