replace anyhow and log with color_eyre and tracing

Since Himalaya is intended to be ran as a CLI in the terminal emulator
environment, their user experience could vastly improve with better and
more colorful error messages and logging.

This change will replace more minimal libraries for error-reporting/han-
dling with their more advanced counterparts.

Since these crates have tight integrations, this commit will change both
in one shot.

Also we have don't need env_logger any more. So I also have removed that
guy as well.

Signed-off-by: Perma Alesheikh <me@prma.dev>

src/account/command/check_up.rs

@@ -1,7 +1,7 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::backend::context::BackendContextBuilder;
-use log::info;
+use tracing::info;
 
 use crate::{
     account::arg::name::OptionalAccountNameArg, backend, config::TomlConfig, printer::Printer,

src/account/command/configure.rs

@@ -1,12 +1,12 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 #[cfg(feature = "imap")]
 use email::imap::config::ImapAuthConfig;
 #[cfg(feature = "smtp")]
 use email::smtp::config::SmtpAuthConfig;
-use log::info;
+use tracing::info;
 #[cfg(any(feature = "imap", feature = "smtp"))]
-use log::{debug, warn};
+use tracing::{debug, warn};
 
 #[cfg(any(feature = "imap", feature = "smtp", feature = "pgp"))]
 use crate::ui::prompt;

src/account/command/list.rs

@@ -1,6 +1,6 @@
-use anyhow::Result;
 use clap::Parser;
-use log::info;
+use color_eyre::Result;
+use tracing::info;
 
 use crate::{
     account::Accounts,

src/account/command/mod.rs

@@ -4,7 +4,7 @@ mod list;
 #[cfg(feature = "account-sync")]
 mod sync;
 
-use anyhow::Result;
+use color_eyre::Result;
 use clap::Subcommand;
 
 use crate::{config::TomlConfig, printer::Printer};

src/account/command/sync.rs

@@ -1,5 +1,5 @@
-use anyhow::{anyhow, bail, Result};
 use clap::{ArgAction, Parser};
+use color_eyre::{eyre::bail, eyre::eyre, Result};
 use email::backend::context::BackendContextBuilder;
 #[cfg(feature = "imap")]
 use email::imap::ImapContextBuilder;
@@ -10,12 +10,12 @@ use email::{
     sync::{hash::SyncHash, SyncEvent},
 };
 use indicatif::{MultiProgress, ProgressBar, ProgressFinish, ProgressStyle};
-use log::info;
 use once_cell::sync::Lazy;
 use std::{
     collections::{BTreeSet, HashMap},
     sync::{Arc, Mutex},
 };
+use tracing::info;
 
 use crate::{
     account::arg::name::OptionalAccountNameArg, backend::BackendKind, config::TomlConfig,
@@ -99,7 +99,7 @@ impl AccountSyncCommand {
                     .as_ref()
                     .map(Clone::clone)
                     .map(Arc::new)
-                    .ok_or_else(|| anyhow!("imap config not found"))?;
+                    .ok_or_else(|| eyre!("imap config not found"))?;
                 let imap_ctx = ImapContextBuilder::new(account_config.clone(), imap_config)
                     .with_prebuilt_credentials()
                     .await?;

src/account/mod.rs

@@ -3,7 +3,7 @@ pub mod command;
 pub mod config;
 pub(crate) mod wizard;
 
-use anyhow::Result;
+use color_eyre::Result;
 use serde::Serialize;
 use std::{collections::hash_map::Iter, fmt, ops::Deref};
 

src/account/wizard.rs

@@ -1,6 +1,6 @@
 #[cfg(feature = "account-sync")]
 use crate::account::config::SyncConfig;
-use anyhow::{bail, Result};
+use color_eyre::{eyre::bail, Result};
 #[cfg(feature = "account-sync")]
 use dialoguer::Confirm;
 use dialoguer::Input;

src/backend/mod.rs

@@ -1,7 +1,7 @@
 pub mod config;
 pub(crate) mod wizard;
 
-use anyhow::Result;
+use color_eyre::Result;
 use async_trait::async_trait;
 use std::{ops::Deref, sync::Arc};
 

src/backend/wizard.rs

@@ -1,4 +1,4 @@
-use anyhow::Result;
+use color_eyre::Result;
 use dialoguer::Select;
 #[cfg(feature = "account-discovery")]
 use email::account::discover::config::AutoConfig;

src/cache/mod.rs

@@ -1,11 +1,11 @@
 pub mod arg;
 
-use anyhow::{anyhow, Context, Result};
+use color_eyre::{eyre::eyre, eyre::Context, Result};
 use dirs::data_dir;
 use email::account::config::AccountConfig;
-use log::debug;
 use sled::{Config, Db};
 use std::collections::HashSet;
+use tracing::debug;
 
 #[derive(Debug)]
 pub enum IdMapper {
@@ -17,7 +17,7 @@ impl IdMapper {
     pub fn new(account_config: &AccountConfig, folder: &str) -> Result<Self> {
         let digest = md5::compute(account_config.name.clone() + folder);
         let db_path = data_dir()
-            .ok_or(anyhow!("cannot get XDG data directory"))?
+            .ok_or(eyre!("cannot get XDG data directory"))?
             .join("himalaya")
             .join(".id-mappers")
             .join(format!("{digest:x}"));
@@ -108,7 +108,7 @@ impl IdMapper {
                             None
                         }
                     })
-                    .ok_or_else(|| anyhow!("cannot get id from alias {alias}"))?;
+                    .ok_or_else(|| eyre!("cannot get id from alias {alias}"))?;
                 debug!("found id {id} from alias {alias}");
 
                 Ok(id)

src/cli.rs

@@ -1,5 +1,5 @@
-use anyhow::Result;
 use clap::{Parser, Subcommand};
+use color_eyre::Result;
 use std::path::PathBuf;
 
 use crate::{
@@ -75,6 +75,20 @@ pub struct Cli {
     #[arg(long, short = 'C', global = true)]
     #[arg(value_name = "MODE", value_enum, default_value_t = Default::default())]
     pub color: ColorFmt,
+
+    /// Enable logs with spantrace.
+    ///
+    /// This is the same as running the command with `RUST_LOG=debug`
+    /// environment variable.
+    #[arg(long, global = true, conflicts_with = "trace")]
+    pub debug: bool,
+
+    /// Enable verbose logs with backtrace.
+    ///
+    /// This is the same as running the command with `RUST_LOG=trace`
+    /// and `RUST_BACKTRACE=1` environment variables.
+    #[arg(long, global = true, conflicts_with = "debug")]
+    pub trace: bool,
 }
 
 #[derive(Subcommand, Debug)]

src/completion/command.rs

@@ -1,8 +1,8 @@
-use anyhow::Result;
 use clap::{value_parser, CommandFactory, Parser};
 use clap_complete::Shell;
-use log::info;
+use color_eyre::Result;
 use std::io;
+use tracing::info;
 
 use crate::cli::Cli;
 

src/config/mod.rs

@@ -1,17 +1,20 @@
 pub mod wizard;
 
-use anyhow::{anyhow, bail, Context, Result};
+use color_eyre::{
+    eyre::{bail, eyre, Context},
+    Result,
+};
 use dirs::{config_dir, home_dir};
 use email::{
     account::config::AccountConfig, config::Config, envelope::config::EnvelopeConfig,
     flag::config::FlagConfig, folder::config::FolderConfig, message::config::MessageConfig,
 };
-use log::debug;
 use serde::{Deserialize, Serialize};
 use serde_toml_merge::merge;
 use shellexpand_utils::{canonicalize, expand};
 use std::{collections::HashMap, fs, path::PathBuf, sync::Arc};
 use toml::{self, Value};
+use tracing::debug;
 
 #[cfg(feature = "account-sync")]
 use crate::backend::BackendKind;
@@ -136,7 +139,7 @@ impl TomlConfig {
     /// found.
     pub fn default_path() -> Result<PathBuf> {
         Ok(config_dir()
-            .ok_or(anyhow!("cannot get XDG config directory"))?
+            .ok_or(eyre!("cannot get XDG config directory"))?
             .join("himalaya")
             .join("config.toml"))
     }
@@ -175,12 +178,12 @@ impl TomlConfig {
                         .filter(|default| *default)
                         .map(|_| (name.to_owned(), account.clone()))
                 })
-                .ok_or_else(|| anyhow!("cannot find default account")),
+                .ok_or_else(|| eyre!("cannot find default account")),
             Some(name) => self
                 .accounts
                 .get(name)
                 .map(|account| (name.to_owned(), account.clone()))
-                .ok_or_else(|| anyhow!("cannot find account {name}")),
+                .ok_or_else(|| eyre!("cannot find account {name}")),
         }?;
 
         #[cfg(feature = "imap")]

src/config/wizard.rs

@@ -1,4 +1,4 @@
-use anyhow::Result;
+use color_eyre::Result;
 use dialoguer::{Confirm, Input, Select};
 use shellexpand_utils::expand;
 use std::{fs, path::PathBuf, process};

src/email/envelope/command/list.rs

@@ -1,12 +1,12 @@
-use anyhow::Result;
 use ariadne::{Color, Label, Report, ReportKind, Source};
 use clap::Parser;
+use color_eyre::Result;
 use email::{
     backend::feature::BackendFeatureSource, email::search_query,
     envelope::list::ListEnvelopesOptions, search_query::SearchEmailsQuery,
 };
-use log::info;
 use std::process::exit;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/email/envelope/command/mod.rs

@@ -1,7 +1,7 @@
 pub mod list;
 pub mod watch;
 
-use anyhow::Result;
+use color_eyre::Result;
 use clap::Subcommand;
 
 use crate::{config::TomlConfig, printer::Printer};

src/email/envelope/command/watch.rs

@@ -1,7 +1,7 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::backend::feature::BackendFeatureSource;
-use log::info;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/email/envelope/flag/arg/ids_and_flags.rs

@@ -1,6 +1,6 @@
 use clap::Parser;
 use email::flag::{Flag, Flags};
-use log::debug;
+use tracing::debug;
 
 /// The ids and/or flags arguments parser.
 #[derive(Debug, Parser)]

src/email/envelope/flag/command/add.rs

@@ -1,7 +1,7 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::backend::feature::BackendFeatureSource;
-use log::info;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/email/envelope/flag/command/mod.rs

@@ -2,7 +2,7 @@ mod add;
 mod remove;
 mod set;
 
-use anyhow::Result;
+use color_eyre::Result;
 use clap::Subcommand;
 
 use crate::{config::TomlConfig, printer::Printer};

src/email/envelope/flag/command/remove.rs

@@ -1,7 +1,7 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::backend::feature::BackendFeatureSource;
-use log::info;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/email/envelope/flag/command/set.rs

@@ -1,7 +1,7 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::backend::feature::BackendFeatureSource;
-use log::info;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/email/envelope/mod.rs

@@ -3,7 +3,7 @@ pub mod command;
 pub mod config;
 pub mod flag;
 
-use anyhow::Result;
+use color_eyre::Result;
 use email::account::config::AccountConfig;
 use serde::Serialize;
 use std::ops;

src/email/message/attachment/command/download.rs

@@ -1,8 +1,8 @@
-use anyhow::{Context, Result};
 use clap::Parser;
+use color_eyre::{eyre::Context, Result};
 use email::backend::feature::BackendFeatureSource;
-use log::info;
 use std::{fs, path::PathBuf};
+use tracing::info;
 use uuid::Uuid;
 
 #[cfg(feature = "account-sync")]

src/email/message/attachment/command/mod.rs

@@ -1,6 +1,6 @@
 mod download;
 
-use anyhow::Result;
+use color_eyre::Result;
 use clap::Subcommand;
 
 use crate::{config::TomlConfig, printer::Printer};

src/email/message/command/copy.rs

@@ -1,7 +1,7 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::backend::feature::BackendFeatureSource;
-use log::info;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/email/message/command/delete.rs

@@ -1,7 +1,7 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::backend::feature::BackendFeatureSource;
-use log::info;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/email/message/command/forward.rs

@@ -1,7 +1,7 @@
-use anyhow::{anyhow, Result};
 use clap::Parser;
+use color_eyre::{eyre::eyre, Result};
 use email::backend::feature::BackendFeatureSource;
-use log::info;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;
@@ -75,7 +75,7 @@ impl MessageForwardCommand {
             .get_messages(folder, &[id])
             .await?
             .first()
-            .ok_or(anyhow!("cannot find message"))?
+            .ok_or(eyre!("cannot find message"))?
             .to_forward_tpl_builder(account_config.clone())
             .with_headers(self.headers.raw)
             .with_body(self.body.raw())

src/email/message/command/mailto.rs

@@ -1,8 +1,8 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::backend::feature::BackendFeatureSource;
-use log::info;
 use mail_builder::MessageBuilder;
+use tracing::info;
 use url::Url;
 
 #[cfg(feature = "account-sync")]

src/email/message/command/mod.rs

@@ -9,7 +9,7 @@ pub mod save;
 pub mod send;
 pub mod write;
 
-use anyhow::Result;
+use color_eyre::Result;
 use clap::Subcommand;
 
 use crate::{config::TomlConfig, printer::Printer};

src/email/message/command/move.rs

@@ -1,7 +1,7 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::backend::feature::BackendFeatureSource;
-use log::info;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/email/message/command/read.rs

@@ -1,8 +1,8 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::backend::feature::BackendFeatureSource;
-use log::info;
 use mml::message::FilterParts;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/email/message/command/reply.rs

@@ -1,7 +1,7 @@
-use anyhow::{anyhow, Result};
 use clap::Parser;
+use color_eyre::{eyre::eyre, Result};
 use email::backend::feature::BackendFeatureSource;
-use log::info;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;
@@ -77,7 +77,7 @@ impl MessageReplyCommand {
             .get_messages(folder, &[id])
             .await?
             .first()
-            .ok_or(anyhow!("cannot find message {id}"))?
+            .ok_or(eyre!("cannot find message {id}"))?
             .to_reply_tpl_builder(account_config.clone())
             .with_headers(self.headers.raw)
             .with_body(self.body.raw())

src/email/message/command/save.rs

@@ -1,8 +1,8 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::backend::feature::BackendFeatureSource;
-use log::info;
 use std::io::{self, BufRead, IsTerminal};
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/email/message/command/send.rs

@@ -1,8 +1,8 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::backend::feature::BackendFeatureSource;
-use log::info;
 use std::io::{self, BufRead, IsTerminal};
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/email/message/command/write.rs

@@ -1,7 +1,7 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::{backend::feature::BackendFeatureSource, message::Message};
-use log::info;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/email/message/template/command/forward.rs

@@ -1,7 +1,7 @@
-use anyhow::{anyhow, Result};
 use clap::Parser;
+use color_eyre::{eyre::eyre, Result};
 use email::backend::feature::BackendFeatureSource;
-use log::info;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;
@@ -69,7 +69,7 @@ impl TemplateForwardCommand {
             .get_messages(folder, &[id])
             .await?
             .first()
-            .ok_or(anyhow!("cannot find message {id}"))?
+            .ok_or(eyre!("cannot find message {id}"))?
             .to_forward_tpl_builder(account_config)
             .with_headers(self.headers.raw)
             .with_body(self.body.raw())

src/email/message/template/command/mod.rs

@@ -4,7 +4,7 @@ mod save;
 mod send;
 mod write;
 
-use anyhow::Result;
+use color_eyre::Result;
 use clap::Subcommand;
 
 use crate::{config::TomlConfig, printer::Printer};

src/email/message/template/command/reply.rs

@@ -1,7 +1,7 @@
-use anyhow::{anyhow, Result};
 use clap::Parser;
+use color_eyre::{eyre::eyre, Result};
 use email::backend::feature::BackendFeatureSource;
-use log::info;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;
@@ -73,7 +73,7 @@ impl TemplateReplyCommand {
             .get_messages(folder, &[id])
             .await?
             .first()
-            .ok_or(anyhow!("cannot find message {id}"))?
+            .ok_or(eyre!("cannot find message {id}"))?
             .to_reply_tpl_builder(account_config)
             .with_headers(self.headers.raw)
             .with_body(self.body.raw())

src/email/message/template/command/save.rs

@@ -1,9 +1,9 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::backend::feature::BackendFeatureSource;
-use log::info;
 use mml::MmlCompilerBuilder;
 use std::io::{self, BufRead, IsTerminal};
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/email/message/template/command/send.rs

@@ -1,9 +1,9 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::backend::feature::BackendFeatureSource;
-use log::info;
 use mml::MmlCompilerBuilder;
 use std::io::{self, BufRead, IsTerminal};
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/email/message/template/command/write.rs

@@ -1,7 +1,7 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::message::Message;
-use log::info;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/email/message/template/mod.rs

@@ -1,7 +1,7 @@
 pub mod arg;
 pub mod command;
 
-use anyhow::Result;
+use color_eyre::Result;
 use email::template::Template;
 
 use crate::printer::{Print, WriteColor};

src/folder/command/add.rs

@@ -1,7 +1,7 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::{backend::feature::BackendFeatureSource, folder::add::AddFolder};
-use log::info;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/folder/command/delete.rs

@@ -1,9 +1,9 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use dialoguer::Confirm;
 use email::{backend::feature::BackendFeatureSource, folder::delete::DeleteFolder};
-use log::info;
 use std::process;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/folder/command/expunge.rs

@@ -1,7 +1,7 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::{backend::feature::BackendFeatureSource, folder::expunge::ExpungeFolder};
-use log::info;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/folder/command/list.rs

@@ -1,7 +1,7 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::{backend::feature::BackendFeatureSource, folder::list::ListFolders};
-use log::info;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/folder/command/mod.rs

@@ -4,7 +4,7 @@ mod expunge;
 mod list;
 mod purge;
 
-use anyhow::Result;
+use color_eyre::Result;
 use clap::Subcommand;
 
 use crate::{config::TomlConfig, printer::Printer};

src/folder/command/purge.rs

@@ -1,9 +1,9 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use dialoguer::Confirm;
 use email::{backend::feature::BackendFeatureSource, folder::purge::PurgeFolder};
-use log::info;
 use std::process;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/folder/mod.rs

@@ -2,7 +2,7 @@ pub mod arg;
 pub mod command;
 pub mod config;
 
-use anyhow::Result;
+use color_eyre::Result;
 use serde::Serialize;
 use std::ops;
 

src/imap/wizard.rs

@@ -1,4 +1,4 @@
-use anyhow::Result;
+use color_eyre::Result;
 use dialoguer::{Confirm, Input, Password, Select};
 #[cfg(feature = "account-discovery")]
 use email::account::discover::config::{AuthenticationType, AutoConfig, SecurityType, ServerType};

src/lib.rs

@@ -19,6 +19,7 @@ pub mod printer;
 pub mod sendmail;
 #[cfg(feature = "smtp")]
 pub mod smtp;
+pub mod tracing;
 pub mod ui;
 
 #[doc(inline)]

src/maildir/wizard.rs

@@ -1,4 +1,4 @@
-use anyhow::Result;
+use color_eyre::Result;
 use dialoguer::Input;
 use dirs::home_dir;
 use email::maildir::config::MaildirConfig;

src/main.rs

@@ -1,25 +1,35 @@
-use anyhow::Result;
+use std::env;
+
 use clap::Parser;
-use env_logger::{Builder as LoggerBuilder, Env, DEFAULT_FILTER_ENV};
+use color_eyre::{Result, Section};
 use himalaya::{
     cli::Cli, config::TomlConfig, envelope::command::list::ListEnvelopesCommand,
     message::command::mailto::MessageMailtoCommand, printer::StdoutPrinter,
 };
-use log::{debug, trace};
+use tracing::{debug, level_filters::LevelFilter, trace};
 
 #[tokio::main]
 async fn main() -> Result<()> {
+    if env::var("RUST_LOG").is_err() {
+        if std::env::args().any(|arg| arg == "--debug") {
+            env::set_var("RUST_LOG", "debug");
+        }
+        if std::env::args().any(|arg| arg == "--trace") {
+            env::set_var("RUST_LOG", "trace");
+        }
+    }
+    let cli = Cli::parse();
+
+    let filter = himalaya::tracing::install()?;
+
+    let mut printer = StdoutPrinter::new(cli.output, cli.color);
+
     #[cfg(not(target_os = "windows"))]
     if let Err((_, err)) = coredump::register_panic_handler() {
-        debug!("cannot register coredump panic handler: {err}");
-        trace!("{err:?}");
+        trace!("cannot register coredump panic handler: {err}");
+        debug!("{err:?}");
     }
 
-    LoggerBuilder::new()
-        .parse_env(Env::new().filter_or(DEFAULT_FILTER_ENV, "warn"))
-        .format_timestamp(None)
-        .init();
-
     // if the first argument starts by "mailto:", execute straight the
     // mailto message command
     let mailto = std::env::args()
@@ -35,10 +45,7 @@ async fn main() -> Result<()> {
             .await;
     }
 
-    let cli = Cli::parse();
-    let mut printer = StdoutPrinter::new(cli.output, cli.color);
-
-    match cli.command {
+    let mut res = match cli.command {
         Some(cmd) => cmd.execute(&mut printer, cli.config_paths.as_ref()).await,
         None => {
             let config = TomlConfig::from_paths_or_default(cli.config_paths.as_ref()).await?;
@@ -46,5 +53,15 @@ async fn main() -> Result<()> {
                 .execute(&mut printer, &config)
                 .await
         }
-    }
+    };
+
+    if filter < LevelFilter::DEBUG {
+        res = res.note("Run with --debug to enable logs with spantrace.");
+    };
+
+    if filter < LevelFilter::TRACE {
+        res = res.note("Run with --trace to enable verbose logs with backtrace.")
+    };
+
+    res
 }

src/manual/command.rs

@@ -1,9 +1,9 @@
-use anyhow::Result;
 use clap::{CommandFactory, Parser};
 use clap_mangen::Man;
-use log::info;
+use color_eyre::Result;
 use shellexpand_utils::{canonicalize, expand};
 use std::{fs, path::PathBuf};
+use tracing::info;
 
 use crate::{cli::Cli, printer::Printer};
 

src/notmuch/wizard.rs

@@ -1,4 +1,4 @@
-use anyhow::Result;
+use color_eyre::Result;
 use dialoguer::Input;
 use email::notmuch::config::NotmuchConfig;
 

src/output/output.rs

@@ -1,5 +1,5 @@
-use anyhow::{anyhow, Error, Result};
 use clap::ValueEnum;
+use color_eyre::{eyre::eyre, eyre::Error, Result};
 use serde::Serialize;
 use std::{
     fmt,
@@ -23,7 +23,7 @@ impl FromStr for OutputFmt {
         match fmt {
             fmt if fmt.eq_ignore_ascii_case("json") => Ok(Self::Json),
             fmt if fmt.eq_ignore_ascii_case("plain") => Ok(Self::Plain),
-            unknown => Err(anyhow!("cannot parse output format {}", unknown)),
+            unknown => Err(eyre!("cannot parse output format {}", unknown)),
         }
     }
 }
@@ -69,7 +69,7 @@ impl FromStr for ColorFmt {
             fmt if fmt.eq_ignore_ascii_case("always") => Ok(Self::Always),
             fmt if fmt.eq_ignore_ascii_case("ansi") => Ok(Self::Ansi),
             fmt if fmt.eq_ignore_ascii_case("auto") => Ok(Self::Auto),
-            unknown => Err(anyhow!("cannot parse color format {}", unknown)),
+            unknown => Err(eyre!("cannot parse color format {}", unknown)),
         }
     }
 }

src/printer/print.rs

@@ -1,4 +1,4 @@
-use anyhow::{Context, Result};
+use color_eyre::{eyre::Context, Result};
 
 use crate::printer::WriteColor;
 

src/printer/print_table.rs

@@ -1,4 +1,4 @@
-use anyhow::Result;
+use color_eyre::Result;
 use email::email::config::EmailTextPlainFormat;
 use std::io;
 use termcolor::{self, StandardStream};

src/printer/printer.rs

@@ -1,5 +1,5 @@
-use anyhow::{Context, Error, Result};
 use clap::ArgMatches;
+use color_eyre::{eyre::Context, Report, Result};
 use std::fmt::{self, Debug};
 use termcolor::StandardStream;
 
@@ -87,7 +87,7 @@ impl From<OutputFmt> for StdoutPrinter {
 }
 
 impl TryFrom<&ArgMatches> for StdoutPrinter {
-    type Error = Error;
+    type Error = Report;
 
     fn try_from(m: &ArgMatches) -> Result<Self, Self::Error> {
         let fmt: OutputFmt = m

src/sendmail/wizard.rs

@@ -1,4 +1,4 @@
-use anyhow::Result;
+use color_eyre::Result;
 use dialoguer::Input;
 use email::sendmail::config::SendmailConfig;
 

src/smtp/wizard.rs

@@ -1,4 +1,4 @@
-use anyhow::Result;
+use color_eyre::Result;
 use dialoguer::{Confirm, Input, Password, Select};
 #[cfg(feature = "account-discovery")]
 use email::account::discover::config::{AuthenticationType, AutoConfig, SecurityType, ServerType};

src/tracing.rs

@@ -0,0 +1,40 @@
+use color_eyre::eyre::Result;
+use std::env;
+use tracing_error::ErrorLayer;
+use tracing_subscriber::{filter::LevelFilter, fmt, prelude::*, EnvFilter};
+
+pub fn install() -> Result<LevelFilter> {
+    let fmt_layer = fmt::layer().with_target(false);
+
+    let (filter_layer, current_filter) = match EnvFilter::try_from_default_env() {
+        Err(_) => (EnvFilter::try_new("warn").unwrap(), LevelFilter::OFF),
+        Ok(layer) => {
+            let level = layer.max_level_hint().unwrap_or(LevelFilter::OFF);
+            (layer, level)
+        }
+    };
+
+    let registry = tracing_subscriber::registry()
+        .with(filter_layer)
+        .with(ErrorLayer::default());
+
+    if current_filter == LevelFilter::OFF {
+        registry.with(fmt_layer.without_time()).init()
+    } else {
+        registry.with(fmt_layer).init()
+    }
+
+    if env::var("RUST_BACKTRACE").is_err() && current_filter == LevelFilter::TRACE {
+        env::set_var("RUST_BACKTRACE", "1");
+    }
+
+    let debug = current_filter >= LevelFilter::DEBUG;
+
+    color_eyre::config::HookBuilder::new()
+        .capture_span_trace_by_default(debug)
+        .display_location_section(debug)
+        .display_env_section(false)
+        .install()?;
+
+    Ok(current_filter)
+}

src/ui/choice.rs

@@ -1,4 +1,4 @@
-use anyhow::Result;
+use color_eyre::Result;
 use dialoguer::Select;
 
 use super::THEME;

src/ui/editor.rs

@@ -1,4 +1,4 @@
-use anyhow::{Context, Result};
+use color_eyre::{eyre::Context, Result};
 use email::{
     account::config::AccountConfig,
     email::utils::{local_draft_path, remove_local_draft},
@@ -6,10 +6,10 @@ use email::{
     folder::DRAFTS,
     template::Template,
 };
-use log::debug;
 use mml::MmlCompilerBuilder;
 use process::SingleCommand;
 use std::{env, fs, sync::Arc};
+use tracing::debug;
 
 use crate::{
     backend::Backend,

src/ui/table/table.rs

@@ -4,11 +4,11 @@
 //!
 //! [builder design pattern]: https://refactoring.guru/design-patterns/builder
 
-use anyhow::{Context, Result};
+use color_eyre::{eyre::Context, Result};
 use email::email::config::EmailTextPlainFormat;
-use log::trace;
 use termcolor::{Color, ColorSpec};
 use terminal_size::terminal_size;
+use tracing::trace;
 use unicode_width::UnicodeWidthStr;
 
 use crate::printer::{Print, PrintTableOpts, WriteColor};