diff --git a/private_dot_config/private_fish/config.fish b/private_dot_config/private_fish/config.fish
index a638699..5f48906 100644
--- a/private_dot_config/private_fish/config.fish
+++ b/private_dot_config/private_fish/config.fish
@@ -54,5 +54,8 @@ function icat
     kitty +kitten icat --align=left $argv
 end
 
+if [ -e /home/anton/.nix-profile/etc/profile.d/nix.fish ]; . /home/anton/.nix-profile/etc/profile.d/nix.fish; end
+
+
 # The next line updates PATH for the Google Cloud SDK.
 if [ -f '/Users/anton/dev/google-cloud-sdk/path.fish.inc' ]; . '/Users/anton/dev/google-cloud-sdk/path.fish.inc'; end
diff --git a/run_onchange_before_install_main_deps.sh.tmpl b/run_onchange_before_install_main_deps.sh.tmpl
index fec067d..f5abb18 100644
--- a/run_onchange_before_install_main_deps.sh.tmpl
+++ b/run_onchange_before_install_main_deps.sh.tmpl
@@ -19,7 +19,7 @@ $Green##########################################################################
 
 {{ else if eq .chezmoi.osRelease.id "debian" "ubuntu" -}}
     sudo apt-get update
-	DEBIAN_FRONTEND=noninteractive sudo apt-get upgrade -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold"
+	sudo DEBIAN_FRONTEND=noninteractive apt-get -o "Dpkg::Options::=--force-confold" upgrade -y  --allow-downgrades --allow-remove-essential --allow-change-held-packages
 
 {{ else if eq .chezmoi.osRelease.id "arch" -}}
     sudo pacman -Syu --noconfirm
@@ -72,6 +72,7 @@ $Green##########################################################################
 ###############################################################################$NC"
   sleep 3
   bash <(curl -L https://nixos.org/nix/install) --no-daemon
+  ~/.nix-profile/etc/profile.d/nix.sh
 fi
 {{ end -}}
 
@@ -121,15 +122,15 @@ sleep 3
 
 {{ if eq .chezmoi.osRelease.id "fedora" -}}
     sudo dnf install neovim fish $ACT_PACKAGES -y
-	bash -c "nix-env -iA nixpkgs.atuin nixpkgs.jump"
+	nix-env -iA nixpkgs.atuin nixpkgs.jump
 
 {{ else if eq .chezmoi.osRelease.id "arch" -}}
     sudo pacman -Sy --noconfirm neovim fish atuin $ACT_PACKAGES
-	bash -c "nix-env -iA nixpkgs.jump"
+	nix-env -iA nixpkgs.jump
 
 {{ else if eq .chezmoi.osRelease.id "debian" "ubuntu" -}}
     sudo apt install fish $ACT_PACKAGES -y
-    bash -c "nix-env -iA nixpkgs.neovim nixpkgs.jump"
+    nix-env -iA nixpkgs.neovim nixpkgs.jump
     if ! fish -c atuin &>/dev/null
 	then
       bash <(curl https://raw.githubusercontent.com/ellie/atuin/main/install.sh)