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Raspberry Pi minimal image

This guide intends to summarize the essencial steps performed to build a Raspberry Pi minmal image using Yocto.

Download software dependencies

To build the image we are going to use the Poky and the layers meta-openembedded , meta-raspberrypi .

The list of all meta-raspberrypi dependencies are contained in the Readme.md the provided MACHINE's are listed on the layer-contentens.md

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// This is a technique to emulate lifetime GATs (generic associated types) on stable rust starting
// with rustc 1.33.
//
// I haven't seen this exact technique before, but I would be surprised if no one else came up with
// it. I think this avoids most downsides of other lifetime GAT workarounds I've seen.
//
// In particular, neither implementing nor using traits with emulated lifetime GATs requires adding
// any helper items. Only defining the trait requires a single helper trait (+ a single helper impl
// for the 2nd variant) per GAT. This also makes the technique viable without any boilerplate
// reducing macros.

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adapter speed   10000
adapter driver  ftdi

ftdi_device_desc "Dual RS232-HS"
ftdi_vid_pid 0x0403 0x6010
ftdi_layout_init 0x0008 0x001b
ftdi_layout_signal nSRST -oe 0x0020 -data 0x0020

set _CHIPNAME riscv
transport select jtag

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    fn iterative_save<W: Write>(&self, mut wtr: W) -> Result<&Self> {
        for row in self {
            for (i, col) in row.iter().enumerate() {
                match i {
                    0 => wtr.write_all(col.as_bytes())?,
                    _ => {
                        wtr.write_all(b",")?;
                        wtr.write_all(col.as_bytes())?
                    }
                }

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fn main() {
    let game = "X 7/ 9-  X F8 ⑧/ F6  X  X X8/"
        .chars()
        .filter(|c| !c.is_whitespace())
        .fold(Vec::new(), |mut rolls, roll| {
            match roll {
                'X' => rolls.push(10_u8),
                '/' => rolls.push(10 - rolls.last().expect("invalid game score")),
                c if c >= '0' && c <= '9' => rolls.push((u32::from(c) - 0x30) as u8),
                c if c >= '⑤' && c <= '⑧' => rolls.push((u32::from(c) - 0x245f) as u8),

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#![feature(existential_type)]
use chrono::Local;
use std::io::{self, Write};
type Result<T> = std::result::Result<T, failure::Error>;

trait IOutput {
    fn write(&self, content: &String) -> Result<()>;
}

struct ConsoleOutput {}

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using System;
using Autofac;

namespace DemoApp
{
  // This interface helps decouple the concept of
  // "writing output" from the Console class. We
  // don't really "care" how the Write operation
  // happens, just that we can write.
  public interface IOutput

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#![feature(existential_type)]

type Result<T> = std::result::Result<T, failure::Error>;

trait MyTrait {
    fn greet(&self) -> String;
}

struct MyType {}

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# ~/.bashrc: executed by bash(1) for non-login shells.
# see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
# for examples

# If not running interactively, don't do anything
case $- in
    *i*) ;;
      *) return;;
esac

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#![forbid(overflowing_literals,)]
#![deny(unsafe_code)] // Do not remove! Change to `allow` to explicitly opt-in to using `unsafe` (facilitates auditing)
// vvv Safety-critical application lints (pedantic: use for safety-critical applications only) vvv
#![deny(clippy::cast_possible_truncation, clippy::cast_possible_wrap, clippy::cast_precision_loss,
        clippy::cast_sign_loss, clippy::float_cmp_const, clippy::indexing_slicing, clippy::integer_arithmetic,
        clippy::maybe_infinite_iter, clippy::option_unwrap_used, clippy::result_unwrap_used,)]
// ^^^ End of safety-critical lint section ^^^
#![warn(clippy::clone_on_ref_ptr, clippy::decimal_literal_representation, clippy::default_trait_access,
        clippy::doc_markdown, clippy::else_if_without_else, clippy::empty_enum, clippy::enum_glob_use,
        clippy::expl_impl_clone_on_copy,  clippy::fallible_impl_from, clippy::filter_map, clippy::if_not_else,