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Allow repository rule to check for sha #19

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merged 1 commit into from
Jun 30, 2018
Merged

Allow repository rule to check for sha #19

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10 changes: 9 additions & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@ load("@io_tweag_rules_nixpkgs//nixpkgs:nixpkgs.bzl", "nixpkgs_git_repository", "
nixpkgs_git_repository(
name = "nixpkgs",
revision = "17.09", # Any tag or commit hash
sha256 = "" # optional sha to verify package integrity!
)

nixpkgs_package(
Expand All @@ -44,7 +45,7 @@ nixpkgs_package(
Name a specific revision of Nixpkgs on GitHub or a local checkout.

```bzl
nixpkgs_git_repository(name, revision)
nixpkgs_git_repository(name, revision, sha256)
```

<table class="table table-condensed table-bordered table-params">
Expand Down Expand Up @@ -73,6 +74,13 @@ nixpkgs_git_repository(name, revision)
to use.</p>
</td>
</tr>
<tr>
<td><code>sha256</code></td>
<td>
<p><code>String; optional</code></p>
<p>The SHA256 used to verify the integrity of the repository</p>
</td>
</tr>
</tbody>
</table>

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1 change: 1 addition & 0 deletions WORKSPACE
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Expand Up @@ -7,6 +7,7 @@ load("//nixpkgs:nixpkgs.bzl", "nixpkgs_git_repository", "nixpkgs_package")
nixpkgs_git_repository(
name = "nixpkgs",
revision = "17.09",
sha256 = "405f1d6ba523630c83fbabef93f0da11ea388510a576adf2ded26a744fbf793e",
)

nixpkgs_package(name = "hello", repository = "@nixpkgs")
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4 changes: 4 additions & 0 deletions nixpkgs/nixpkgs.bzl
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Expand Up @@ -7,12 +7,16 @@ def _nixpkgs_git_repository_impl(ctx):
ctx.download_and_extract(
url = "https://github.com/NixOS/nixpkgs/archive/%s.tar.gz" % ctx.attr.revision,
stripPrefix = "nixpkgs-" + ctx.attr.revision,
sha256 = ctx.attr.sha256,
)

nixpkgs_git_repository = repository_rule(
implementation = _nixpkgs_git_repository_impl,
attrs = {
"revision": attr.string(),
"sha256": attr.string(
default = "",
),
},
local = False,
)
Expand Down