terraform-providers: add passthru.updateScript

- drop nix-shell nixpkgs path

pkgs/applications/networking/cluster/terraform-providers/default.nix

@@ -4,6 +4,7 @@
 , fetchFromGitHub
 , callPackage
 , config
+, writeShellScript
 
 , cdrtools # libvirt
 }:
@@ -47,7 +48,12 @@ let
         '';
 
         # Keep the attributes around for later consumption
-        passthru = attrs;
+        passthru = attrs // {
+          updateScript = writeShellScript "update" ''
+            provider="$(basename ${provider-source-address})"
+            ./pkgs/applications/networking/cluster/terraform-providers/update-provider --no-build "$provider"
+          '';
+        };
       });
 
   list = lib.importJSON ./providers.json;

pkgs/applications/networking/cluster/terraform-providers/update-all-providers

@@ -1,5 +1,5 @@
 #!/usr/bin/env nix-shell
-#! nix-shell -I nixpkgs=../../../../.. -i bash -p jq
+#! nix-shell -i bash -p jq
 # shellcheck shell=bash
 
 # Update all providers which have specified provider source address

pkgs/applications/networking/cluster/terraform-providers/update-provider

@@ -1,5 +1,5 @@
 #!/usr/bin/env nix-shell
-#! nix-shell -I nixpkgs=../../../../.. -i bash -p coreutils curl git jq moreutils nix nix-prefetch
+#! nix-shell -i bash -p coreutils curl git jq moreutils nix nix-prefetch
 # shellcheck shell=bash
 # vim: ft=sh
 #
@@ -100,6 +100,8 @@ echo_provider() {
   echo "== terraform-providers.${provider}: $* =="
 }
 
+pushd "$(dirname "$0")"
+
 if [[ ${provider} =~ ^[^/]+/[^/]+$ ]]; then
   echo_provider "init"
   source_address=registry.terraform.io/${provider}
@@ -164,3 +166,5 @@ if [[ ${build} == 1 ]]; then
   echo_provider "building"
   nix-build --no-out-link "${repo_root}" -A "terraform-providers.${provider}"
 fi
+
+popd