How do I start the synapse-compress-state script?

[rubo77]

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Please add detailed information to the README for someone, who has never used rust before, how to start the script:

build this rust script

1. install Rust

   • on Debian 10:

     sudo apt install cargo
     

   • or manual rust install (min needed rust version 1.27)

     Make sure to have at least 2GB free diskspace, then:

     curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh`
     

     (choose default if asked)

2. clone this repo

   git clone https://github.com/matrix-org/
   cd rust-synapse-compress-state
   

3. configure the current shell

   source $HOME/.cargo/env
   

4. build the script

   cargo build
   

Now you can run the script in target/debug/synapse-compress-state

[rubo77]

rust is quite large. On my synapse mashine I don't want to have 2GB rust hanging around, maybe you can use a minimal install for rust too? like https://github.com/lambci/lambci/blob/master/home/init/rust