deltas,config: Skip some file existence checks based on config

src/deltas.rs

@@ -27,7 +27,7 @@ fn main() -> Result<()> {
     let mut conf = Config::from_file(&args.config)?;
     init_logger(conf.general.log_level.as_str());
 
-    conf.validate(true)?;
+    conf.validate(true, false)?;
     let mut gen = Generator::init(&conf, false);
     info!("Running generator...");
     gen.create_patches().context("Creating delta patches failed!")?;

src/models/config.rs

@@ -302,10 +302,10 @@ impl Config {
             self.package.updater.notes_file = fs::canonicalize(notes_file)?;
         }
 
-        self.validate(false)
+        self.validate(false, args.packaging_only)
     }
 
-    pub fn validate(&mut self, deltas_only: bool) -> Result<()> {
+    pub fn validate(&mut self, deltas_only: bool, packaging_only: bool) -> Result<()> {
         // Output folder cannot be checked as it may not exist yet
         match fs::canonicalize(&self.env.input_dir) {
             Ok(res) => self.env.input_dir = res,
@@ -341,8 +341,12 @@ impl Config {
         // Check file paths (for binaries, also check if they are in %PATH%)
         misc::check_binary_path(&mut self.env.pdbcopy_path)?;
         misc::check_binary_path(&mut self.env.makensis_path)?;
-        misc::check_binary_path(&mut self.env.sevenzip_path)?;
-        misc::check_binary_path(&mut self.env.pandoc_path)?;
+        if !self.package.zip.skip {
+            misc::check_binary_path(&mut self.env.sevenzip_path)?;
+        }
+        if !packaging_only {
+            misc::check_binary_path(&mut self.env.pandoc_path)?;
+        }
 
         // Check if private key is set correctly (if signing is enabled)
         if !self.package.updater.skip_sign {
@@ -394,6 +398,10 @@ impl Config {
             bail!("NSIS script does not exist!")
         }
 
+        if packaging_only {
+            return Ok(());
+        }
+
         // Check that notes and vc redist files exists
         if !self.package.updater.vc_redist_path.exists() {
             bail!(