• About PumoPM
  • Built with
  • What does Pumo mean?
  • Why is the main branch called senpai?
• Getting started
• Usage
• Roadmap [0/2]
• License

About PumoPM

The Pumo Power Manager (PumoPM for short) is a custom power manager I wrote for myself in order to have a lightweight one that does exactly what I want, how I want. Basically: I want to be informed of a low level of battery (I consider 25% to be low, hence the defaults), very low (again, my preference is at 15%), and then at critical level (10%) I want the computer to automatically sleep, and if it stays asleep for a certain duration it will be suspended.

This project is written for a GNU/Linux operating system running with systemd. I have currently no plan on making it available on other platforms, except maybe one day with Guix (if you don’t value your time, take a look at it, it’s an awesome operating system, much better than NixOS in my opinion).

Built with

PumoPM is written in pure, stable Rust (at least >= 1.45.2). Its four dependencies are the crates battery, clap, time, and notify-rust.

What does Pumo mean?

It’s my cat’s name.

Why is the main branch called senpai?

This is a joke that originated from r/ProgrammerAnimemes when news were about defaulting to another name than master for git’s main branch. As a joke, someone proposed senpai on this reddit as an alternative to master, and here we are. This is a weeb’s joke.

Getting started

To run the project, you currently only have one option: download the project’s source code, compile it, and run it. You will need to have Rust installed. Update your Rust installation if needed with rustup update. Then, simply begin with a git clone, then cd into the project’s directory. You can then build the project with cargo, and even install it locally if you want to.

  $ git clone https://labs.phundrak.com/phundrak/pumopm
  $ cd pumopm
  $ cargo build --release
  $ cargo run --release # to run the project
  $ cargo install --path . # optional, to install for the user the project

Usage

It is possible to run PumoPM with a couple of different flags. You will find their description here:

-h --help

displays a help message

-V --version

displays the program’s version

-l --low

level at which the battery is considered to be low

-L --very-low

level at which the battery is considered to be very low

-c --critical

level at which the battery is considered to be critical

-r --refresh-rate

refresh rate of the battery’s reads

-v --verbose

augment the program’s verbosity, can be repeated

The arguments -l, -L and -c accept an integer between 5 and 75 (actually any value that will fit in an unsigned byte, but it will be rounded up to 5 or down to 75), while -r accepts any integer that can fit in a u64, although I’m sure you’ll never need that long of a refresh time.

The levels will also see their values ordered. If the -L value is higher than -l, then the program will automatically set it to one percent lower, or to 5% (whichever is higher). Same goes for the value of -c if it goes over the -L value, including after the re-evaluation of the latter’s value. For instance, calling the program like so

  $ pumopm -l 30 -L 32 -c 30

is the same as calling it like so

  $ pumopm -l 30 -L 29 -c 28

TODO Roadmap [0/2]

• system tray
• close the program with the exit code 0

License

This project is under the GPL-3.0 or later license. You can read it here, but basically, the following are allowed:

• Commercial use of this program and its source code
• Modification of the program and the source code
• Distribution of the program and the source code
• Patent use of the program and the source code
• Private use of the program and the source code

However, this program comes with no warranty and I am under no liability for what you do with it. The conditions of using this program are:

• Notice your users of the license and copyright
• State any changes in the code
• Disclose the source code
• Use the same license

Please note that I am no lawyer, and the only legal document you can read is the one linked above.