Templating Nix Configurations

rebuild-config

#!/usr/bin/env bash
set -e
fluxlib bash

# this builds configuration files from templates
# it takes a template for a nix expression and replaces
# certain variables with values stored in some files.

function maketemp
{
    template="$1"
    file="$2"

    cp "$template" "$file"

    com="sed -i"


    for var in username fullname hostname timezone
    do
        #sleep 1
        clnvar=${!var//\//\\\/}
        com="$com -e 's;\$$var;$clnvar;g'"
    done

    eval "$com $file"
}


. "$FLUX_HOME/env/user"
. "$FLUX_HOME/env/host"


templates=$(find "$FLUX_HOME/env/nixos/" -name "*.tmp")

for file in $templates
    do
        maketemp "${file:0:-4}".{tmp,nix}
done

save

#!/usr/bin/env bash
set -e

function save
{
    file="$1"
    vars="${@:2}"
    declare -p $vars > $file
}

useredit

#!/usr/bin/env bash
set -e
fluxlib bash

echo "Enter your user name:"
read username

echo "Enter your full name or alias:"
read fullname

save $FLUX_HOME/env/user username fullname