reproduce.tt: Use color

Dependencies

• [2] 3G7OYUSE reproduce.tt: Check for the presence of commands like nix-build
• [3] HZWUT4YN Allow users to reproduce builds on their own systems
• [4] 5Q4ZLL37 reproduce.tt: Add --help flag

Change contents

• edit in src/root/reproduce.tt at line 10
  [3.94]

  [3.94]
  +

  +

  + info() {

  + echo "$1" >&2

  + }
• replacement in src/root/reproduce.tt at line 67
  [3.1474]→[2.0:49](∅→∅)
  − echo "storing inputs and results in $tmpDir" >&2
  [3.1474]

  [2.49]
  + info "storing inputs and results in $tmpDir..."
• replacement in src/root/reproduce.tt at line 90
  [3.1003]→[2.261:270](∅→∅),[2.270]→[3.1003:1120](∅→∅),[3.1003]→[3.1003:1120](∅→∅)
  − echo

  − echo "fetching Git input ‘[% input.name %]’ from ‘[% input.uri %]’ (commit [% input.revision %])..." >&2
  [3.1003]

  [2.271]
  + info "fetching Git input ‘[% input.name %]’ from ‘[% input.uri %]’ (commit [% input.revision %])..."
• replacement in src/root/reproduce.tt at line 109
  [3.1750]→[2.295:304](∅→∅),[2.304]→[3.1750:1873](∅→∅),[3.1750]→[3.1750:1873](∅→∅)
  − echo

  − echo "fetching Mercurial input ‘[% input.name %]’ from ‘[% input.uri %]’ (commit [% input.revision %])..." >&2
  [3.1750]

  [2.305]
  + info "fetching Mercurial input ‘[% input.name %]’ from ‘[% input.uri %]’ (commit [% input.revision %])..."
• replacement in src/root/reproduce.tt at line 125
  [3.2302]→[2.328:337](∅→∅),[2.337]→[3.2302:2426](∅→∅),[3.2302]→[3.2302:2426](∅→∅)
  − echo

  − echo "fetching Subversion input ‘[% input.name %]’ from ‘[% input.uri %]’ (commit [% input.revision %])..." >&2
  [3.2302]

  [2.338]
  + info "fetching Subversion input ‘[% input.name %]’ from ‘[% input.uri %]’ (commit [% input.revision %])..."
• replacement in src/root/reproduce.tt at line 171
  [3.3499]→[2.389:394](∅→∅)
  − echo
  [3.3499]

  [3.3499]
  + info "running nix-build..."
• replacement in src/root/reproduce.tt at line 175
  [3.3568]→[3.1657:1767](∅→∅)
  − nix-build "$nixExprInputDir/[% build.nixexprpath %]" -A '[% build.job.name %]' "${args[@]}" "${extraArgs[@]}"
  [3.3568]
  + exec nix-build "$nixExprInputDir/[% build.nixexprpath %]" -A '[% build.job.name %]' "${args[@]}" "${extraArgs[@]}"