* nix-build: default to `./default.nix' if no paths are specified.

So when using Nix as a build tool, you can just say `nix-build' and
  it will build the top-level derivation defined in `default.nix'.
This commit is contained in:
Eelco Dolstra 2005-07-13 17:39:10 +00:00
parent d4879b4dfe
commit a5ceb5bc0b
3 changed files with 43 additions and 29 deletions

View file

@ -25,6 +25,10 @@ to multiple derivations, multiple sequentially numbered symlinks are
created (<filename>result</filename>, <filename>result-2</filename>,
and so on).</para>
<para>If no <replaceable>paths</replaceable> are specified, then
<command>nix-build</command> will use <filename>default.nix</filename>
in the current directory, if it exists.</para>
<note><para><command>nix-build</command> is essentially a wrapper
around <link
linkend="sec-nix-instantiate"><command>nix-instantiate</command></link>

View file

@ -176,7 +176,7 @@ set.</para></footnote></para>
<sect1 id="sec-profiles"><title>Profiles</title>
<para>Profiles and user environments are Nixs mechanism for
implementing the ability to allow differens users to have different
implementing the ability to allow different users to have different
configurations, and to do atomic upgrades and rollbacks. To
understand how they work, its useful to know a bit about how Nix
works. In Nix, components are stored in unique locations in the

View file

@ -2,11 +2,6 @@
nixExpr=$1
if test -z "$nixExpr"; then
echo "syntax: $0 NIX-EXPR..." >&2
exit 1
fi
extraArgs=
addDrvLink=0
addOutLink=1
@ -16,9 +11,15 @@ trap 'rm -f ./.nix-build-tmp-*' EXIT
# Process the arguments.
exprs=
for i in "$@"; do
case "$i" in
--help)
echo "syntax: $0 [NIX-EXPR...]" >&2
exit 0
;;
--add-drv-link)
addDrvLink=1
;;
@ -32,6 +33,18 @@ for i in "$@"; do
;;
*)
exprs="$exprs $i"
;;
esac
done
if test -z "$exprs"; then
exprs="./default.nix"
fi
# Process the specified Nix expressions.
for i in $exprs; do
# Instantiate the Nix expression.
prefix=
if test "$addDrvLink" = 0; then prefix=.nix-build-tmp-; fi
@ -53,7 +66,4 @@ for i in "$@"; do
for j in $outPaths; do
echo "$(readlink "$j")"
done
;;
esac
done