This commit adds a simple check to both blisp commands that checks the
passed firmware .bin file exists, and is readable.
Justification: I flashed my Pinecil V2 that arrived today, and
misspelled the filename. blisp erased flash, and then exited - it did
not check the firmware .bin was readable/accessible, which meant my
Pinecil was soft-bricked.
I have tested the change, and it works for both commands when the input
file isn't readable.
I had to declare the `cmd_{iot,write}_args_print_glossary` function as
static before the call, so that we don't use undeclared functions before
we call them.
Signed-off-by: Dom Rodriguez <shymega@shymega.org.uk>
This adds a Nix flake, shims for 'legacy' Nix, and a `.envrc` for
`direnv`. blisp is now able to run directly via:
`nix run github:pine64/blisp`
and for Nix/NixOS users, this helps with a one-click developer
environment.
Signed-off-by: Dom Rodriguez <shymega@shymega.org.uk>
Dom Rodriguez