1 files changed, 72 insertions, 0 deletions
diff --git a/scripts/nix-profile-daemon.sh.in b/scripts/nix-profile-daemon.sh.in
new file mode 100644
index 000000000..d256b24ed
--- /dev/null
+++ b/scripts/nix-profile-daemon.sh.in
@@ -0,0 +1,72 @@
+# Only execute this file once per shell.
+if [ -n "${__ETC_PROFILE_NIX_SOURCED:-}" ]; then return; fi
+__ETC_PROFILE_NIX_SOURCED=1
+
+NIX_LINK=$HOME/.nix-profile
+if [ -n "${XDG_STATE_HOME-}" ]; then
+    NIX_LINK_NEW="$XDG_STATE_HOME/nix/profile"
+else
+    NIX_LINK_NEW=$HOME/.local/state/nix/profile
+fi
+if [ -e "$NIX_LINK_NEW" ]; then
+    NIX_LINK="$NIX_LINK_NEW"
+else
+    if [ -t 2 ] && [ -e "$NIX_LINK_NEW" ]; then
+        warning="\033[1;35mwarning:\033[0m"
+        printf "$warning Both %s and legacy %s exist; using the latter.\n" "$NIX_LINK_NEW" "$NIX_LINK" 1>&2
+        if [ "$(realpath "$NIX_LINK")" = "$(realpath "$NIX_LINK_NEW")" ]; then
+            printf "         Since the profiles match, you can safely delete either of them.\n" 1>&2
+        else
+            # This should be an exceptionally rare occasion: the only way to get it would be to
+            # 1. Update to newer Nix;
+            # 2. Remove .nix-profile;
+            # 3. Set the $NIX_LINK_NEW to something other than the default user profile;
+            # 4. Roll back to older Nix.
+            # If someone did all that, they can probably figure out how to migrate the profile.
+            printf "$warning Profiles do not match. You should manually migrate from %s to %s.\n" "$NIX_LINK" "$NIX_LINK_NEW" 1>&2
+        fi
+    fi
+fi
+
+export NIX_PROFILES="@localstatedir@/nix/profiles/default $NIX_LINK"
+
+# Populate bash completions, .desktop files, etc
+if [ -z "${XDG_DATA_DIRS-}" ]; then
+    # According to XDG spec the default is /usr/local/share:/usr/share, don't set something that prevents that default
+    export XDG_DATA_DIRS="/usr/local/share:/usr/share:$NIX_LINK/share:/nix/var/nix/profiles/default/share"
+else
+    export XDG_DATA_DIRS="$XDG_DATA_DIRS:$NIX_LINK/share:/nix/var/nix/profiles/default/share"
+fi
+
+# Set $NIX_SSL_CERT_FILE so that Nixpkgs applications like curl work.
+if [ -n "${NIX_SSL_CERT_FILE:-}" ]; then
+    : # Allow users to override the NIX_SSL_CERT_FILE
+elif [ -e /etc/ssl/certs/ca-certificates.crt ]; then # NixOS, Ubuntu, Debian, Gentoo, Arch
+    export NIX_SSL_CERT_FILE=/etc/ssl/certs/ca-certificates.crt
+elif [ -e /etc/ssl/ca-bundle.pem ]; then # openSUSE Tumbleweed
+    export NIX_SSL_CERT_FILE=/etc/ssl/ca-bundle.pem
+elif [ -e /etc/ssl/certs/ca-bundle.crt ]; then # Old NixOS
+    export NIX_SSL_CERT_FILE=/etc/ssl/certs/ca-bundle.crt
+elif [ -e /etc/pki/tls/certs/ca-bundle.crt ]; then # Fedora, CentOS
+    export NIX_SSL_CERT_FILE=/etc/pki/tls/certs/ca-bundle.crt
+else
+  # Fall back to what is in the nix profiles, favouring whatever is defined last.
+  check_nix_profiles() {
+    if [ -n "$ZSH_VERSION" ]; then
+      # Zsh by default doesn't split words in unquoted parameter expansion.
+      # Set local_options for these options to be reverted at the end of the function
+      # and shwordsplit to force splitting words in $NIX_PROFILES below.
+      setopt local_options shwordsplit
+    fi
+    for i in $NIX_PROFILES; do
+      if [ -e "$i/etc/ssl/certs/ca-bundle.crt" ]; then
+        export NIX_SSL_CERT_FILE=$i/etc/ssl/certs/ca-bundle.crt
+      fi
+    done
+  }
+  check_nix_profiles
+  unset -f check_nix_profiles
+fi
+
+export PATH="$NIX_LINK/bin:@localstatedir@/nix/profiles/default/bin:$PATH"
+unset NIX_LINK