diff --git a/scripts/nix-profile.fish.in b/scripts/nix-profile.fish.in
index 619df52b895..becc5efd0d9 100644
--- a/scripts/nix-profile.fish.in
+++ b/scripts/nix-profile.fish.in
@@ -56,4 +56,36 @@ if test -n "$HOME" && test -n "$USER"
     set --erase NIX_LINK
 end
 
+<<<<<<< HEAD
+=======
+# Set $NIX_SSL_CERT_FILE so that Nixpkgs applications like curl work.
+if test -n "$NIX_SSL_CERT_FILE"
+    : # Allow users to override the NIX_SSL_CERT_FILE
+else if test -e /etc/ssl/certs/ca-certificates.crt # NixOS, Ubuntu, Debian, Gentoo, Arch
+    set --export NIX_SSL_CERT_FILE /etc/ssl/certs/ca-certificates.crt
+else if test -e /etc/ssl/ca-bundle.pem # openSUSE Tumbleweed
+    set --export NIX_SSL_CERT_FILE /etc/ssl/ca-bundle.pem
+else if test -e /etc/ssl/certs/ca-bundle.crt # Old NixOS
+    set --export NIX_SSL_CERT_FILE /etc/ssl/certs/ca-bundle.crt
+else if test -e /etc/pki/tls/certs/ca-bundle.crt # Fedora, CentOS
+    set --export NIX_SSL_CERT_FILE /etc/pki/tls/certs/ca-bundle.crt
+else if test -e "$NIX_LINK/etc/ssl/certs/ca-bundle.crt" # fall back to cacert in Nix profile
+    set --export NIX_SSL_CERT_FILE "$NIX_LINK/etc/ssl/certs/ca-bundle.crt"
+else if test -e "$NIX_LINK/etc/ca-bundle.crt" # old cacert in Nix profile
+    set --export NIX_SSL_CERT_FILE "$NIX_LINK/etc/ca-bundle.crt"
+end
+
+# Only use MANPATH if it is already set. In general `man` will just simply
+# pick up `.nix-profile/share/man` because is it close to `.nix-profile/bin`
+# which is in the $PATH. For more info, run `manpath -d`.
+if set --query MANPATH
+    set --export --prepend --path MANPATH "$NIX_LINK/share/man"
+end
+
+add_path "$NIX_LINK/bin"
+set --erase NIX_LINK
+
+# Cleanup
+
+>>>>>>> 803fb83f7 (nix-profile.fish: Typo NIX_SS{H => L}_CERT_FILE)
 functions -e add_path