source ./common.sh # remove the flake registry from nix.conf, to set to default ("vendored") sed -i '/flake-registry/d' "$NIX_CONF_DIR/nix.conf" # Make sure the vendored registry contains the correct amount. [[ $(nix registry list | wc -l) == 37 ]] # sanity check, contains the important ones nix registry list | grep '^global flake:nixpkgs' nix registry list | grep '^global flake:home-manager' # it should work the same if we set to vendored directly. echo 'flake-registry = vendored' >> "$NIX_CONF_DIR/nix.conf" [[ $(nix registry list | wc -l) == 37 ]] # sanity check, contains the important ones nix registry list | grep '^global flake:nixpkgs' nix registry list | grep '^global flake:home-manager' # the online flake registry should still work, but it is deprecated. set -m # port 0: auto pick a free port, unbufferred output python3 -u -m http.server 0 --bind 127.0.0.1 > server.out & # wait for the http server to admit it is working while ! grep -qP 'port \d+' server.out ; do echo 'waiting for python http' >&2 sleep 0.2 done port=$(awk 'match($0,/port ([[:digit:]]+)/, ary) { print ary[1] }' server.out) sed -i '/flake-registry/d' "$NIX_CONF_DIR/nix.conf" echo "flake-registry = http://127.0.0.1:$port/flake-registry.json" >> "$NIX_CONF_DIR/nix.conf" cat < flake-registry.json { "flakes": [ { "from": { "type": "indirect", "id": "nixpkgs" }, "to": { "type": "github", "owner": "NixOS", "repo": "nixpkgs" } }, { "from": { "type": "indirect", "id": "private-flake" }, "to": { "type": "github", "owner": "fancy-enterprise", "repo": "private-flake" } } ], "version": 2 } EOF [[ $(nix registry list | wc -l) == 2 ]] nix registry list | grep '^global flake:nixpkgs' nix registry list | grep '^global flake:private-flake' # make sure we have a warning: nix registry list 2>&1 | grep "config option flake-registry referring to a URL is deprecated and will be removed" kill %python