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Arduino command line tool

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### Describe the problem I was trying to install `esp32` board to my machine using the `arduino-cli` and this was the result ```bash $ arduino-cli core install esp32:esp32 Downloading packages......

os: linux
type: imperfection
topic: packaging

### Describe the problem It is required to configure the udev code in Linux to provide access to the Serial port. Otherwise, it is not possible to upload sketches to...

os: linux
type: imperfection

### Describe the request Add an option to prevent caching or to clear the cache. ### Describe the current behavior Some libraries and board package use a `build_opt.h` file in...

type: enhancement
topic: code
topic: build-process

Please see https://forum.arduino.cc/t/including-javascript-in-a-webpage-served-by-espasyncwebserver/697109 where the issue was raised Source code: ```cpp const char index_html[] PROGMEM = R"rawliteral( html { font-family: Arial; display: inline-block; margin: 0px auto; text-align: center; } h2...

type: imperfection
topic: build-process

### Describe the request Print a warning when necessary prototype generation for a function was intentionally skipped. 🙂 The user will have useful information about the cause of what would...

type: enhancement
topic: code
topic: build-process

### Describe the request If a sketch is recompiled twice in a row, the Arduino-preprocessed sketch `Sketch.ino.cpp` is recompiled and re-linked even if not necessary. ### Describe the current behavior...

type: enhancement
topic: code
topic: build-process

### Describe the request As part of https://github.com/arduino/arduino-cli/pull/2336, one can get the timestamp from the CLI. This is great, and IDE2 wants to use it. Please add the `timestamp` property...

type: enhancement
topic: code
topic: gRPC

### Describe the request Do not error if the downloaded file size doesn't match the `size` value in the index. A mismatch should only generate a warning. This warning will...

type: enhancement
topic: code
criticality: high

### Describe the problem I cannot use any library that I download ### To reproduce I downloaded the library ArduinoJson then write the code: ``` #include void setup() { }...

status: waiting for information
topic: code
type: imperfection

### Describe the problem [Pluggable discovery](https://arduino.github.io/arduino-cli/dev/pluggable-discovery-specification/) tools supply Arduino CLI with a list of "ports" of connected Arduino boards. When Arduino CLI is [running as a daemon](https://arduino.github.io/arduino-cli/dev/commands/arduino-cli_daemon/), these tools are...

status: waiting for information
topic: code
type: imperfection