Add install instructions for arch

Dependencies

• [2] BA5KMNO5 Updating installation instructions
• [3] SCSV2FNS Reboot

Change contents

• edit in src/installing.md at line 22
  [2.139]

  [3.308152]
  +

  + On Arch Linux, install:
• edit in src/installing.md at line 25
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  [3.308153]
  + ```

  + sudo pacman -S clang libsodium gcc-libs rustup pkgconf diffutils make xxhash

  + ```

  +

  + and run

  +

  + ```

  + rustup default stable

  + ```

  +

  + to set the default rust toolchain.

  +
• replacement in src/installing.md at line 41
  [3.308207]→[2.140:184](∅→∅)
  − cargo install pijul --version 1.0.0-alpha.6
  [3.308207]

  [3.308249]
  + cargo install pijul --version 1.0.0-alpha.8

  + ```

  +

  + You might need to add the install directory to your $PATH environment

  + variable, for example, add to your

  + `~/.config/environment.d/envvars.conf`:

  +

  + ```

  + export PATH="$PATH:$HOME/.cargo/bin/"
• edit in src/installing.md at line 83
  [3.308895]

  [3.308895]
  + However, this package is currently flagged Out-of-date and seems to be broken.