Make starship prompt less verbose

bin/find_processes_using_secure_input.py

@@ -0,0 +1,99 @@
+#!/usr/bin/env python
+# find_processes_using_secure_input.py
+# From "Finding the app/process that’s using Secure Input" by Alex Chan
+# (https://alexwlchan.net/2021/secure-input/).
+# Licensed under CC-BY 4.0
+"""
+If macOS detects that you're typing sensitive data (e.g. a password), it prevents
+other apps from reading keystrokes.  This is normally a good thing, but it's mildly
+annoying if you use an app like TextExpander, and macOS doesn't notice that it's
+no longer using Secure Input.  Then your keyboard shortcuts stop working!
+
+This script will print a list of processes that have Secure Input enabled, e.g.:
+
+    The following processes are using Secure Input:
+      113 loginwindow
+      302 Safari
+      519 Firefox
+
+It relies on two interesting commands:
+
+    ioreg -a -l -w 0
+        prints the I/O Kit Registry in XML format, which includes information about
+        a process using Secure Input in the kCGSSessionSecureInputPID key
+
+    ps -c -o command= -p <pid>
+        prints the executable name associated with a process ID (pid), which is
+        used for the output
+
+See https://alexwlchan.net/2021/secure-input/
+
+"""
+
+import plistlib
+import subprocess
+
+
+def find_dicts_in_tree(d):
+    """
+    Traverses the values of d, returning everything that looks dict-like.
+
+    Ideally I'd have a better idea of the structure of the output of ioreg,
+    but I don't care to spend that much time on this problem.
+    """
+    if isinstance(d, dict):
+        yield d
+        for dict_value in d.values():
+            for dv in find_dicts_in_tree(dict_value):
+                yield dv
+    elif isinstance(d, list):
+        for list_item in d:
+            for lv in find_dicts_in_tree(list_item):
+                yield lv
+    else:
+        pass
+
+
+def executable_name(pid):
+    """
+    Returns the executable name associated with a given pid.
+    """
+    return subprocess.check_output([
+        "ps",
+        "-c",              # Only show the executable name, not the full command line
+        "-o", "command=",  # Only show the command column, no header
+        "-p", str(pid)     # Only show the given process ID
+    ]).strip().encode("utf8")
+
+
+if __name__ == "__main__":
+    ioreg_output = subprocess.check_output([
+        "ioreg",
+        "-a",      # Archive the output in XML
+        "-l",      # Show properties for all displayed objects
+        "-w", "0"  # Unlimited line width
+    ])
+
+    try:
+        plist = plistlib.loads(ioreg_output, fmt=plistlib.FMT_XML)
+    except AttributeError:  # Python 2
+        plist = plistlib.readPlistFromString(ioreg_output)
+
+    process_ids = set()
+    for d in find_dicts_in_tree(plist):
+        if "kCGSSessionSecureInputPID" in d:
+            process_ids.add(d["kCGSSessionSecureInputPID"])
+
+    sorted_pids = [
+        str(pid)
+        for pid in sorted(int(p) for p in process_ids)
+    ]
+
+    print("The following processes are using Secure Input:")
+    if sorted_pids:
+        subprocess.check_call([
+            "ps",
+            "-c",                        # Only show the executable name, not the full command line
+            "-o", "pid=,command=",        # Only show the PID/command column, no header
+            "-p", ",".join(sorted_pids)  # Only get the selected processes
+        ])

homes/darwin.nix

@@ -9,6 +9,8 @@
       (pkgs.writeShellScriptBin "get-current-wifi" ''
         ipconfig getsummary $(networksetup -listallhardwareports | awk '/Hardware Port: Wi-Fi/{getline; print $2}') | awk -F ' SSID : ' '/ SSID : / {print $2}'
       '')
+      (pkgs.writeScriptBin "secure-finger"
+        (builtins.readFile ./../bin/find_processes_using_secure_input.py))
     ];
     sessionVariables = {
       JULIA_NUM_THREADS = "$(sysctl -n hw.logicalcpu)";

programs/starship.nix

@@ -1,4 +1,7 @@
-{ lib }: {
+{ lib }:
+let language-format-string = "[$symbol($version )]($style)";
+in {
+
   enable = true;
   enableBashIntegration = true;
   enableZshIntegration = true;
@@ -29,6 +32,14 @@
       format = "([\\[$all_status$ahead_behind\\]]($style))";
     };
     hostname = { format = "[$hostname]($style)"; };
+    julia = { format = language-format-string; };
+    nix_shell = {
+      symbol = "";
+      impure_msg = "/󰓑";
+      pure_msg = "/󱕦";
+      format = "[$symbol$state( ($name))]($style)";
+    };
+    nodejs = { format = language-format-string; };
     os = {
       disabled = false;
       symbols = {
@@ -41,6 +52,24 @@
         NixOS = "";
       };
     };
+    package = {
+      format = language-format-string;
+      symbol = " ";
+    };
+    python = {
+      format =
+        "[\${symbol}\${pyenv_prefix}(\${version} )(($virtualenv) )]($style)";
+      symbol = "";
+    };
+    quarto = { format = language-format-string; };
+    rlang = {
+      format = language-format-string;
+      symbol = "";
+    };
+    ruby = {
+      format = language-format-string;
+      symbol = "";
+    };
     shell = {
       # Show which shell if not using zsh (the default)
       disabled = false;