refactor: rewrite command-not-found.sh in rust

Cargo.toml

@@ -34,6 +34,7 @@ grep = "0.2.12"
 headers = "0.3.8"
 http = "0.2.9"
 hyper-proxy = "0.9.1"
+indoc = "2.0.1"
 atty = "0.2.14"
 memchr = "2.5.0"
 num_cpus = "1.15.0"

etc/command-not-found.bash

@@ -0,0 +1,3 @@
+command_not_found_handle() {
+    @out@/bin/nix-locate --command-not-found "$@"
+}

etc/command-not-found.fish

@@ -0,0 +1,3 @@
+function fish_command_not_found
+    @out@/bin/nix-locate --command-not-found $argv
+end

etc/command-not-found.zsh

@@ -0,0 +1,3 @@
+command_not_found_handler() {
+    @out@/bin/nix-locate --command-not-found "$@"
+}

flake.nix

@@ -23,9 +23,8 @@
           inherit ((lib.importTOML ./Cargo.toml).package) version;
 
           src = lib.sourceByRegex self [
-            "(examples|src)(/.*)?"
+            "(etc|examples|src)(/.*)?"
             ''Cargo\.(toml|lock)''
-            ''command-not-found\.sh''
           ];
 
           cargoLock = {
@@ -37,9 +36,9 @@
             ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ];
 
           postInstall = ''
-            substituteInPlace command-not-found.sh \
+            substituteInPlace etc/command-not-found.* \
               --subst-var out
-            install -Dm555 command-not-found.sh -t $out/etc/profile.d
+            install -Dm444 etc/command-not-found.* -t $out/etc/profile.d
           '';
 
           meta = with lib; {