In reply to @grahamc:nixos.org
hrm I tried to add a URL parameter to the community room's avatar but it breaks the rendering: "avatar": "mxc://nixos.org/721c442bc81f9fedaeada3ad89af693666619889?autogenerated=1"

That's generated by

#! /usr/bin/env nix-shell
#! nix-shell -i sh -p inkscape

val=$(echo "Let's test it" | sha512sum -)
color1=${val:0:3}
color2=${val:4:3}
echo $color1
echo $color2
cat nix-snowflake.svg \
    | sed "s/7EBAE4/${color1}/gi" \
    | sed "s/5277C3/${color2}/gi" \
    | inkscape -z -w 128 --pipe -o new.png

If you want to keep some reference to the room name: This will use the first letter of the second word and write it in there, too:

#! /usr/bin/env nix-shell
#! nix-shell -i sh -p inkscape imagemagick

INPUT="Nix Matrix Discussion"
LETTER=$(echo "$INPUT" | awk '{print $2}' | head -c1)

val=$(echo "$INPUT" | sha512sum -)
color1=${val:0:3}
color2=${val:3:3}
color3=${val:6:3}
color4="000"

cat nix-snowflake.svg \
    | sed "s/7EBAE4/${color1}/gi" \
    | sed "s/5277C3/${color2}/gi" \
    | inkscape -z -w 256 --pipe --export-type=png --export-filename=-\
    | convert png:- -font "DejaVu-Sans-Bold" -gravity center \
	      -pointsize 128 -fill "#${color3}" -stroke "#${color4}" -strokewidth 4 -annotate 0 "$LETTER" \
	      new.png

That was generated by

#! /usr/bin/env nix-shell
#! nix-shell -i sh -p inkscape imagemagick

INPUT="Nix Matrix Discussion"
LETTER=$(echo "$INPUT" | awk '{print $2}' | head -c1)

val=$(echo "$INPUT" | sha512sum -)
color1=${val:0:3}
color2=${val:3:3}
color3="7EBAE4" # ${val:6:3} # Color for Letter
color4="5277C3" # Outline for Letter
FONT="DejaVu-Sans-Bold"
SIZE=256

cat nix-snowflake.svg \
    | sed "s/7EBAE4/${color1}/gi" \
    | sed "s/5277C3/${color2}/gi" \
    | inkscape -z -w ${SIZE} --pipe --export-type=png --export-filename=-\
    | convert png:- -font "$FONT" -gravity center \
	      -pointsize "$(($SIZE / 3))" -fill "#${color3}" -stroke "#${color4}" -strokewidth 3 -annotate 0 "$LETTER" \
	      new.png

CRTified: what I heard back is two-fold:

1. the geometric logos are more unique in shape, color, pattern
2. the differently colored NixOS logos is a bit strange because it creates a ton of not-quite-the-logo logos

I'm inclined to go with the purely geometric ones

CRTified: what I heard back is two-fold:

1. the geometric logos are more unique in shape, color, pattern
2. the differently colored NixOS logos are a bit strange because it creates a ton of not-quite-the-logo logos

I'm inclined to go with the purely geometric ones