Add support for ~/.config/pijul even on macos

Dependencies

• [2] SXEYMYF7 Fixing the bad changes in history (unfortunately, by rebooting).
• [3] SEWGHUHQ .pijul/config: simplify remotes and hooks
• [4] L4JXJHWX pijul/*: reorganize imports and remove extern crate

Change contents

• edit in pijul/src/config.rs at line 1
  [2.89866]

  [2.89867]
  + use crate::Error;

  +
• replacement in pijul/src/config.rs at line 20
  [2.90243]→[2.90243:90370](∅→∅)
  − let s = std::fs::read(&dir);

  − let s = match s {

  − Ok(s) => s,

  − Err(e) => {
  [2.90243]

  [2.90370]
  + let s = std::fs::read(&dir)

  + .or_else(|e| {

  + // Read from `$HOME/.config/pijul` dir

  + if let Some(mut dir) = dirs_next::home_dir() {

  + dir.push(".config");

  + dir.push(CONFIG_DIR);

  + dir.push("config.toml");

  + std::fs::read(&dir)

  + } else {

  + Err(e.into())

  + }

  + })

  + .or_else(|e| {

  + // Read from `$HOME/.pijulconfig`
• replacement in pijul/src/config.rs at line 36
  [2.90487]→[2.90487:90532](∅→∅)
  − std::fs::read(&dir)?
  [2.90487]

  [2.90532]
  + std::fs::read(&dir)
• replacement in pijul/src/config.rs at line 38
  [2.90561]→[2.90561:90607](∅→∅)
  − return Err(e.into());
  [2.90561]

  [2.90607]
  + Err(e.into())
• replacement in pijul/src/config.rs at line 40
  [2.90629]→[2.90629:90662](∅→∅)
  − }

  − };
  [2.90629]

  [2.90662]
  + })?;
• replacement in pijul/src/config.rs at line 42
  [2.90697]→[2.90697:90881](∅→∅)
  − if let Ok(c) = toml::from_slice(&s) {

  − Ok(c)

  − } else {

  − Err((crate::Error::CouldNotReadConfig { path: dir }).into())

  − }
  [2.90697]

  [2.90881]
  + toml::from_slice(&s).map_err(|_| Error::CouldNotReadConfig { path: dir }.into())
• replacement in pijul/src/config.rs at line 44
  [2.90898]→[2.90898:90954](∅→∅)
  − Err(crate::Error::NoGlobalConfigDir.into())
  [2.90898]

  [2.90954]
  + Err(Error::NoGlobalConfigDir.into())