Add configuration flags for portage arguments (#436)

config.example.toml

@@ -58,6 +58,8 @@
 #yay_arguments = "--nodevel"
 #trizen_arguments = "--devel"
 #enable_tlmgr = true
+emerge_sync_flags = "-q"
+emerge_update_flags = "-uDNa --with-bdeps=y world"
 
 #[windows]
 # Manually select Windows updates

src/config.rs

@@ -12,6 +12,18 @@ use std::{env, fs};
 use structopt::StructOpt;
 use strum::{EnumIter, EnumString, EnumVariantNames, IntoEnumIterator, VariantNames};
 
+#[allow(unused_macros)]
+macro_rules! str_value {
+    ($section:ident, $value:ident) => {
+        pub fn $value(&self) -> Option<&str> {
+            self.config_file
+                .$section
+                .as_ref()
+                .and_then(|section| section.$value.as_deref())
+        }
+    };
+}
+
 macro_rules! check_deprecated {
     ($config:expr, $old:ident, $section:ident, $new:ident) => {
         if $config.$old.is_some() {
@@ -110,6 +122,8 @@ pub struct Linux {
     trizen_arguments: Option<String>,
     dnf_arguments: Option<String>,
     enable_tlmgr: Option<bool>,
+    emerge_sync_flags: Option<String>,
+    emerge_update_flags: Option<String>,
 }
 
 #[derive(Deserialize, Default, Debug)]
@@ -553,4 +567,10 @@ impl Config {
         !self.opt.disable_predefined_git_repos
             && get_deprecated!(&self.config_file, predefined_git_repos, git, pull_predefined).unwrap_or(true)
     }
+
+    #[cfg(target_os = "linux")]
+    str_value!(linux, emerge_sync_flags);
+
+    #[cfg(target_os = "linux")]
+    str_value!(linux, emerge_update_flags);
 }

src/steps/os/linux.rs

@@ -95,7 +95,7 @@ impl Distribution {
             Distribution::CentOS | Distribution::Fedora => upgrade_redhat(ctx),
             Distribution::ClearLinux => upgrade_clearlinux(&sudo, run_type),
             Distribution::Debian => upgrade_debian(&sudo, cleanup, run_type, yes),
-            Distribution::Gentoo => upgrade_gentoo(&sudo, run_type),
+            Distribution::Gentoo => upgrade_gentoo(ctx),
             Distribution::Suse => upgrade_suse(&sudo, run_type),
             Distribution::Void => upgrade_void(&sudo, run_type),
             Distribution::Solus => upgrade_solus(&sudo, run_type),
@@ -289,8 +289,10 @@ fn upgrade_void(sudo: &Option<PathBuf>, run_type: RunType) -> Result<()> {
     Ok(())
 }
 
-fn upgrade_gentoo(sudo: &Option<PathBuf>, run_type: RunType) -> Result<()> {
-    if let Some(sudo) = &sudo {
+fn upgrade_gentoo(ctx: &ExecutionContext) -> Result<()> {
+    let run_type = ctx.run_type();
+
+    if let Some(sudo) = &ctx.sudo() {
         if let Some(layman) = which("layman") {
             run_type.execute(&sudo).arg(layman).args(&["-s", "ALL"]).check_run()?;
         }
@@ -298,8 +300,13 @@ fn upgrade_gentoo(sudo: &Option<PathBuf>, run_type: RunType) -> Result<()> {
         println!("Syncing portage");
         run_type
             .execute(&sudo)
-            .arg("/usr/bin/emerge")
-            .args(&["-q", "--sync"])
+            .args(&["/usr/bin/emerge", "--sync"])
+            .args(
+                ctx.config()
+                    .emerge_sync_flags()
+                    .map(|s| s.split_whitespace().collect())
+                    .unwrap_or_else(|| vec!["-q"]),
+            )
             .check_run()?;
 
         if let Some(eix_update) = which("eix-update") {
@@ -309,7 +316,12 @@ fn upgrade_gentoo(sudo: &Option<PathBuf>, run_type: RunType) -> Result<()> {
         run_type
             .execute(&sudo)
             .arg("/usr/bin/emerge")
-            .args(&["-uDNa", "--with-bdeps=y", "world"])
+            .args(
+                ctx.config()
+                    .emerge_update_flags()
+                    .map(|s| s.split_whitespace().collect())
+                    .unwrap_or_else(|| vec!["-uDNa", "--with-bdeps=y", "world"]),
+            )
             .check_run()?;
     } else {
         print_warning("No sudo detected. Skipping system upgrade");