Introduce installSecretFn script function to make script shorter.

modules/age.nix

@@ -61,9 +61,19 @@ with lib; let
     }
   '';
 
-  installSecret = secretType: ''
-    ${setTruePath secretType}
-    echo "decrypting '${secretType.file}' to '$_truePath'..."
+  installSecretFn = ''
+    installSecret() {
+      symlink="$1"
+      name="$2"
+      path="$3"
+      file="$4"
+      mode="$5"
+      if "$symlink"; then
+        _truePath="${cfg.secretsMountPoint}/$_agenix_generation/$name"
+      else
+        _truePath="$path"
+      fi
+      echo "decrypting $file to '$_truePath'..."
       TMP_FILE="$_truePath.tmp"
 
       IDENTITIES=()
@@ -77,19 +87,19 @@ with lib; let
       test "''${#IDENTITIES[@]}" -eq 0 && echo "[agenix] WARNING: no readable identities found!"
 
       mkdir -p "$(dirname "$_truePath")"
-    [ "${secretType.path}" != "${cfg.secretsDir}/${secretType.name}" ] && mkdir -p "$(dirname "${secretType.path}")"
+      [ "$path" != "${cfg.secretsDir}/$name" ] && mkdir -p "$(dirname "$path")"
       (
         umask u=r,g=,o=
-      test -f "${secretType.file}" || echo '[agenix] WARNING: encrypted file ${secretType.file} does not exist!'
+        test -f "$file" || echo '[agenix] WARNING: encrypted file '$file' does not exist!'
         test -d "$(dirname "$TMP_FILE")" || echo "[agenix] WARNING: $(dirname "$TMP_FILE") does not exist!"
-      LANG=${config.i18n.defaultLocale or "C"} ${ageBin} --decrypt "''${IDENTITIES[@]}" -o "$TMP_FILE" "${secretType.file}"
+        LANG=${config.i18n.defaultLocale or "C"} ${ageBin} --decrypt "''${IDENTITIES[@]}" -o "$TMP_FILE" "$file"
       )
-    chmod ${secretType.mode} "$TMP_FILE"
+      chmod "$mode" "$TMP_FILE"
       mv -f "$TMP_FILE" "$_truePath"
 
-    ${optionalString secretType.symlink ''
-      [ "${secretType.path}" != "${cfg.secretsDir}/${secretType.name}" ] && ln -sfn "${cfg.secretsDir}/${secretType.name}" "${secretType.path}"
-    ''}
+      "$symlink" && ([ "$path" != "${cfg.secretsDir}/$name" ] && ln -sfn "${cfg.secretsDir}/$name" "$path")
+      true
+    }
   '';
 
   testIdentities =
@@ -111,10 +121,20 @@ with lib; let
     }
   '';
 
-  installSecrets = builtins.concatStringsSep "\n" (
+  installSecrets = let
+    mkLine = secretType: ''
+      installSecret "${
+        if secretType.symlink
+        then "true"
+        else "false"
+      }" "${secretType.name}" "${secretType.path}" "${secretType.file}" "${secretType.mode}";
+    '';
+  in
+    builtins.concatStringsSep "\n" (
       ["echo '[agenix] decrypting secrets...'"]
       ++ testIdentities
-    ++ (map installSecret (builtins.attrValues cfg.secrets))
+      ++ [installSecretFn]
+      ++ (map mkLine (builtins.attrValues cfg.secrets))
       ++ [cleanupAndLink]
     );