Handle gracefully config path not existing (Fixes #238) (#239)

config.example.toml

@@ -38,8 +38,5 @@
 #[commands]
 #"Python Environment" = "~/dev/.env/bin/pip install -i https://pypi.python.org/simple -U --upgrade-strategy eager jupyter"
 
-# Output logs
-#verbose = true
-
 # Cleanup temporary or old files
 #cleanup = true

src/config.rs

@@ -4,7 +4,7 @@ use directories::BaseDirs;
 use failure::ResultExt;
 use strum::{EnumIter, EnumString, EnumVariantNames, IntoEnumIterator};
 
-use log::{debug, error, LevelFilter};
+use log::{debug, LevelFilter};
 use pretty_env_logger::formatted_timed_builder;
 use serde::Deserialize;
 use shellexpand;
@@ -64,7 +64,6 @@ pub struct ConfigFile {
     yay_arguments: Option<String>,
     no_retry: Option<bool>,
     run_in_tmux: Option<bool>,
-    verbose: Option<bool>,
     cleanup: Option<bool>,
     only: Option<Vec<Step>>,
 }
@@ -75,8 +74,8 @@ impl ConfigFile {
         if !config_path.exists() {
             write(&config_path, include_str!("../config.example.toml"))
                 .map_err(|e| {
-                    error!(
-                        "Unable to write the example configuration file to {}: {}",
+                    debug!(
+                        "Unable to write the example configuration file to {}: {}. Using blank config.",
                         config_path.display(),
                         e
                     );
@@ -184,18 +183,19 @@ impl Config {
     /// The function parses the command line arguments and reading the configuration file.
     pub fn load(base_dirs: &BaseDirs) -> Result<Self, Error> {
         let opt = CommandLineArgs::from_args();
-        let config_file = ConfigFile::read(base_dirs)?;
 
         let mut builder = formatted_timed_builder();
 
-        if opt.verbose || config_file.verbose.unwrap_or(false) {
+        if opt.verbose {
             builder.filter(Some("topgrade"), LevelFilter::Trace);
         }
 
-        let allowed_steps = Self::allowed_steps(&opt, &config_file);
-
         builder.init();
 
+        let config_file = ConfigFile::read(base_dirs).unwrap_or_else(|_| ConfigFile::default());
+
+        let allowed_steps = Self::allowed_steps(&opt, &config_file);
+
         Ok(Self {
             opt,
             config_file,