1  #!/bin/sh
 2  # Wrapper script to launch chromium with nice priority
 3  # This only affects chromium instances spawned by our automation code
 4  # Uses absolute path for NixOS compatibility
 5  # Written in POSIX sh (not bash) so it works with NixOS's /bin/sh stub
 6  
 7  # Ensure standard paths are available (pipeline service has minimal PATH)
 8  export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:${PATH:-}"
 9  
10  # Get the real chromium path
11  CHROMIUM_BIN=""
12  
13  if [ -d "/nix/store" ]; then
14    # NixOS host: find chromium in the nix store
15    # Directories have format: HASH-chromium-VERSION/bin/chromium
16    for dir in /nix/store/*-chromium-*/bin/chromium; do
17      if [ ! -x "$dir" ]; then
18        continue
19      fi
20      # Skip unwrapped and sandbox variants using case (POSIX sh, no bash regex needed)
21      case "$dir" in
22        *unwrapped* | *sandbox*)
23          continue
24          ;;
25        *)
26          CHROMIUM_BIN="$dir"
27          break
28          ;;
29      esac
30    done
31  
32    if [ -z "$CHROMIUM_BIN" ] || [ ! -x "$CHROMIUM_BIN" ]; then
33      echo "ERROR: chromium not found in NixOS store at /nix/store/*-chromium-*/bin/chromium" >&2
34      exit 1
35    fi
36  else
37    # Non-NixOS (Docker/Linux): try Playwright's bundled chromium
38    # Playwright bundled binaries won't work on NixOS (glibc linking issue)
39    for dir in "$HOME/.cache/ms-playwright/chromium_headless_shell-"*/chrome-headless-shell-linux64/chrome-headless-shell; do
40      if [ -x "$dir" ]; then
41        CHROMIUM_BIN="$dir"
42        break
43      fi
44    done
45  
46    if [ -z "$CHROMIUM_BIN" ] || [ ! -x "$CHROMIUM_BIN" ]; then
47      for dir in "$HOME/.cache/ms-playwright/chromium-"*/chrome-linux64/chrome; do
48        if [ -x "$dir" ]; then
49          CHROMIUM_BIN="$dir"
50          break
51        fi
52      done
53    fi
54  
55    if [ -z "$CHROMIUM_BIN" ] || [ ! -x "$CHROMIUM_BIN" ]; then
56      echo "ERROR: chromium not found in Playwright cache at ~/.cache/ms-playwright/" >&2
57      exit 1
58    fi
59  fi
60  
61  # Launch chromium with nice priority 19 (lowest priority)
62  exec nice -n 19 "$CHROMIUM_BIN" "$@"