pkgs: Add echoargs

2 files changed, 27 insertions, 0 deletions

diff --git a/pkgs/default.nix b/pkgs/default.nix
index d7a9f19..d0dafaa 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -29,6 +29,8 @@ pkgs: {
 
   nowrap = pkgs.callPackage ./nowrap {};
 
+  echoargs = pkgs.callPackage ./echoargs {};
+
   # TODO: These should be contained in the 'vimPlugins' attrset. This turns out
   # to be non-trivial because this module is both consumed in a flake output
   # context and an overlay context.
diff --git a/pkgs/echoargs/default.nix b/pkgs/echoargs/default.nix
new file mode 100644
index 0000000..a74b716
--- /dev/null
+++ b/pkgs/echoargs/default.nix
@@ -0,0 +1,25 @@
+{
+  writeTextFile,
+  python3,
+  lib,
+}:
+writeTextFile {
+  name = "echoargs";
+
+  text = ''
+    #!${python3.interpreter}
+
+    import sys
+    import json
+
+    for i, arg in enumerate(sys.argv):
+        print(f"argv[%d] = %s" % (i, json.dumps(arg)))
+  '';
+  executable = true;
+  destination = "/bin/echoargs";
+
+  meta = with lib; {
+    description = "Prints command-line arguments for debugging";
+    mainProgram = "echoargs";
+  };
+}