forked from lix-project/hydra
e0d3a1c1a5
A reproduce script includes a logline that may resemble:
> using these flags: --arg nixpkgs { outPath = /tmp/build-137689173/nixpkgs/source; rev = "fdc872fa200a32456f12cc849d33b1fdbd6a933c"; shortRev = "fdc872f"; revCount = 273100; } -I nixpkgs=/tmp/build-137689173/nixpkgs/source --arg officialRelease false --option extra-binary-caches https://hydra.nixos.org/ --option system x86_64-linux /tmp/build-137689173/nixpkgs/source/pkgs/top-level/release.nix -A
These are passed along to nix-build and that's fine and dandy, but you can't just copy-paste this as is, as the `{}` introduces a syntax error and the value accompanying `-A` is `''`.
A very naive approach is to just `printf "%q"` the individual args, which makes them safe to copy-paste. Unfortunately, this looks awful due to the liberal usage of slashes:
```
$ printf "%q" '{ outPath = /tmp/build-137689173/nixpkgs/source; rev = "fdc872fa200a32456f12cc849d33b1fdbd6a933c"; shortRev = "fdc872f"; revCount = 273100; }'
\{\ outPath\ =\ /tmp/build-137689173/nixpkgs/source\;\ rev\ =\ \"fdc872fa200a32456f12cc849d33b1fdbd6a933c\"\;\ shortRev\ =\ \"fdc872f\"\;\ revCount\ =\ 273100\;\ \}
```
Alternatively, if we just use `set -x` before we execute nix-build, we'll get the whole invocation in a friendly, copy-pastable format that nicely displays `{}`-enclosed content and preserves the empty arg following `-A`:
```
running nix-build...
using this invocation:
+ nix-build --arg nixpkgs '{ outPath = /tmp/build-138165173/nixpkgs/source; rev = "e0e4484f2c028d2269f5ebad0660a51bbe46caa4"; shortRev = "e0e4484"; revCount = 274008; }' -I nixpkgs=/tmp/build-138165173/nixpkgs/source --arg officialRelease false --option extra-binary-caches https://hydra.nixos.org/ --option system x86_64-linux /tmp/build-138165173/nixpkgs/source/pkgs/top-level/release.nix -A ''
```
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|---|---|---|
| .. | ||
| static | ||
| all.tt | ||
| auth.tt | ||
| bootstrap-2.3.1.zip | ||
| build-deps.tt | ||
| build.tt | ||
| channel-contents.tt | ||
| common.tt | ||
| dashboard-my-jobs-tab.tt | ||
| dashboard-my-jobsets-tab.tt | ||
| dashboard.tt | ||
| deps.tt | ||
| edit-jobset.tt | ||
| edit-project.tt | ||
| error.tt | ||
| evals.tt | ||
| flot-0.8.3.zip | ||
| job-metrics-tab.tt | ||
| job.tt | ||
| jobset-channels-tab.tt | ||
| jobset-eval.tt | ||
| jobset-jobs-tab.tt | ||
| jobset.tt | ||
| layout.tt | ||
| lazy_error.tt | ||
| log.tt | ||
| machine-status.tt | ||
| machines.tt | ||
| Makefile.am | ||
| metric.tt | ||
| news.tt | ||
| overview.tt | ||
| plain.tt | ||
| product-list.tt | ||
| project.tt | ||
| queue-runner-status.tt | ||
| queue-summary.tt | ||
| queue.tt | ||
| reproduce.tt | ||
| runtime-deps.tt | ||
| search.tt | ||
| status.tt | ||
| steps.tt | ||
| topbar.tt | ||
| user.tt | ||
| users.tt | ||