I can confirm the issue with nixos-install running out of memory still happens even with the latest disko and nix tooilng

evaluating derivation 'git+file:///home/matthew/git/nixcfg#nixosConfigurations.bpi-r4.config.syerror: build of '/nix/store/g952ci9c1fhdn61ybb71xd7yngspsbdk-homerouter-disko-images.drv' on 'ssh-ng://matthewcroughan@aarch64.nixos.community' failed: builder for '/nix/store/g952ci9c1fhdn61ybb71xd7yngspsbdk-homerouter-disko-images.drv' failed with exit code 123;
       last 10 log lines:
       > cp: cannot access '/nix/store/h60m1fwahjd2mv6gsg77ji3vb4gpj4dk-source/pkgs/applications/misc/tui-journal': Cannot allocate memory
       > cp: cannot access '/nix/store/h60m1fwahjd2mv6gsg77ji3vb4gpj4dk-source/pkgs/applications/misc/tuir': Cannot allocate memory
       > cp: cannot access '/nix/store/h60m1fwahjd2mv6gsg77ji3vb4gpj4dk-source/pkgs/applications/misc/tut': Cannot allocate memory
       > cp: cannot access '/nix/store/h60m1fwahjd2mv6gsg77ji3vb4gpj4dk-source/pkgs/applications/misc/tuxclocker': Cannot allocate memory
       > cp: cannot access '/nix/store/ia3ymz0pcg0w31091fb3w9jld3qa1kgp-util-linux-2.39.4-lib/share/locale/de/LC_MESSAGES': Cannot allocate memory
       > cp: cannot access '/nix/store/ia3ymz0pcg0w31091fb3w9jld3qa1kgp-util-linux-2.39.4-lib/share/locale/es': Cannot allocate memory
       > cp: cannot access '/nix/store/ia3ymz0pcg0w31091fb3w9jld3qa1kgp-util-linux-2.39.4-lib/share/locale/et': Cannot allocate memory
       > cp: cannot access '/nix/store/kgdz4hwrdf6mir55xzmgmdnf9z75jm3l-tzdata-2024a/share/zoneinfo/right/Mexico': Cannot allocate memory
       > cp: cannot access '/nix/store/l7gmwp99pwx2s20hy3hzhva0vxzpcwa9-systemd-minimal-256.2/share/dbus-1/services': Cannot allocate memory
       > [  152.515840] reboot: Power down
       For full logs, run 'nix log /nix/store/g952ci9c1fhdn61ybb71xd7yngspsbdk-homerouter-disko-images.drv'.