8bc5104a6e
When specifying the `builder` attribute in `stdenv.mkDerivation`, this
will be effectively transformed into
builtins.derivation {
builder = stdenv.shell;
args = [ "-e" builder ];
}
This also means that `default-builder.sh` is never sourced and as a
result it's not guaranteed that `$NIX_ATTRS_SH_FILE` is set to a correct
location[1].
Also, we need to source `.attrs.sh` to source `$stdenv`. So, the
following is done now:
* If `$NIX_ATTRS_SH_FILE` points to a correct location, then use it.
Directly using `.attrs.sh` is problematic for `nix-shell(1)` usage
(see previous commit for more context), so prefer the environment
variable if possible.
* Otherwise, if `.attrs.sh` exists, then use it. See [1] for when this
can happen.
* If neither applies, it can be assumed that `__structuredAttrs` is
turned off and thus nothing needs to be done.
[1] It's possible that it doesn't exist at all - in case of Nix 2.3 or
it can point to a wrong location on older Nix versions with a bug in
`__structuredAttrs`.
26 lines
776 B
Bash
26 lines
776 B
Bash
if [ -e "$NIX_ATTRS_SH_FILE" ]; then . "$NIX_ATTRS_SH_FILE"; elif [ -f .attrs.sh ]; then . .attrs.sh; fi
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source $stdenv/setup
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(echo "#!$SHELL"; \
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echo 'ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no "$@"') > ssh
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chmod +x ssh
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export CVS_RSH=$PWD/ssh
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# creating the export drictory and checking out there only to be able to
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# move the content without the root directory into $out ...
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# cvs -f -d "$url" export $tag -d "$out" "$module"
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# should work (but didn't - got no response on #cvs)
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# See als man Page for those options
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mkdir -p export
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if [ -n "$tag" ]; then
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tag="-r $tag"
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else
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if [ -n "$date" ]; then
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tag="-D $date"
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else
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tag="-D NOW"
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fi
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fi
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(cd export && cvs -f -z0 -d "$cvsRoot" export $tag "$module")
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mv export/* $out
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