Ajour des drafts

_drafts/2021-09-25-impression-3d-notes.md

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+Marque de la laque: 3DLAC.
+
+
+
+```gcode
+G21 ;metric values
+M82 ;set extruder to absolute mode
+M107 ;start with the fan off
+M280 P0 S160; BL-Touch Alarm realease
+G4 P100; Delay for BL-Touch
+G28; home
+M280 P0 S160 ; BLTouch alarm release
+G4 P100 ; delay for BLTouch
+G29; Auto leveling
+M420 Z5 ; LEVELING_FADE_HEIGHT Real activation and set parameters (if not set here, Z-Compensation failed)
+M500; Write data carto G29
+G92 E0 ;zero the extruded length
+G1 F200 E3 ;extrude 3mm of feed stock
+G92 E0 ;zero the extruded length again
+G1 F4200
+M117 Printing...
+```

_drafts/nix.md

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+## Boot a VM
+
+Check launch.sh
+
+## Create basic partitioning
+
+```bash
+sudo parted /dev/sda -- mklabel gpt
+
+# uefi part
+sudo parted /dev/sda -- mkpart ESP fat32 1MiB 512MiB
+sudo parted /dev/sda -- set 1 esp on
+sudo mkfs.fat -F 32 -n boot /dev/sda1
+
+# encrypted part
+sudo parted /dev/sda -- mkpart cryptroot 512MiB 100%
+```
+
+Setup the crypted boot:
+
+```bash
+sudo cryptsetup luksFormat /dev/sda2 # need to set the password
+sudo cryptsetup open /dev/sda2 cryptlvm
+
+sudo pvcreate /dev/mapper/cryptlvm
+sudo vgcreate EncryptedOS /dev/mapper/cryptlvm
+
+sudo lvcreate -L 8G EncryptedOS -n swap
+sudo lvcreate -l 100%FREE EncryptedOS -n root
+
+mkfs.ext4 -L nixos /dev/MyVolGroup/root
+mkswap -L cryptswap /dev/MyVolGroup/swap
+```
+
+## Mount our stuff!
+
+```
+sudo swapon -L cryptswap
+sudo mount /dev/disk/by-label/nixos /mnt
+sudo mkdir /mnt/boot
+sudo mount /dev/disk/by-label/boot /mnt/boot
+```
+
+## Generate the configuration
+
+```bash
+nixos-generate-config --root /mnt
+```
+
+And then we need to update `/mnt/etc/nix/configuration.nix` to add luks to the initrd:
+
+```
+{
+  # snip...
+  boot.initrd.luks.devices."cryptlvm".device = "/dev/disk/by-partlabel/cryptroot";
+  # snip...
+}
+```
+
+*Another tutorial updates the hardware-configuration.nix but it seems to be a bad practise as the file may be overwritten in the future by some Nix tools*
+
+*Do not forget to put "s" at the end when required, do not forget the semi colon at the end of the expression*.
+
+When ready, run:
+
+```bash
+sudo nixos-install
+```
+
+The tool assumes that you mounted your future system on `/mnt`.
+
+Type the password you want for your root user, wait that the program returns and poweroff:
+
+```bash
+sudo poweroff
+```
+
+## Booting on a fresh NixOS
+
+*Show how we changed the command line*
+
+Start your VM, first type your cryptsetup password.
+Then login with the root account (you just created the password with `nixos-install`).
+
+If you made a change to your configuration.nix, you can apply it with:
+
+```
+nixos-rebuild switch
+```
+
+You can update your system by running:
+
+```bash
+nix-channel --update nixos
+nixos-rebuild switch
+```
+
+## Setting up my users
+
+I chose to go for the declarative way.
+
+I first set:
+
+```
+users.mutableUsers = false;
+```
+
+Then I create my user:
+
+```
+users.users.quentin = {
+  isNormalUser = true;
+  home = "/home/quentin";
+  description = "Quentin Dufour";
+  extraGroups = [ "wheel" "networkmanager" ];
+  hashedPassword = ""; # compute with mkpasswd -m sha-512
+}
+```
+
+## Setting up my DE
+
+I chose Sway which is an i3 clone for Wayland.
+
+```
+programs.sway.enable = true;
+```
+
+It is covered here: https://nixos.org/manual/nixos/stable/index.html#sec-wayland
+
+I also added some programs:
+
+```
+wget
+vim
+nyxt
+alacritty
+```
+
+
+## Sources 
+
+Comment configurer une machine UEFI :
+  - https://papy-tux.legtux.org/doc1310/index.html
+
+Comment installer simplement :
+  - https://nixos.org/manual/nixos/stable/#sec-installation
+
+Comment chiffrer :
+  - https://ramblings.henryjenkins.name/posts/going-from-zero-to-nixos/
+
+