diff options
| author | Eelco Dolstra <e.dolstra@tudelft.nl> | 2004-06-20 19:17:54 +0000 |
|---|---|---|
| committer | Eelco Dolstra <e.dolstra@tudelft.nl> | 2004-06-20 19:17:54 +0000 |
| commit | 112ee89501a936ad9c492780be6b63f53b2eb9ca (patch) | |
| tree | 2070bc757fa986b062b7964619ad927b272fd1de /tests/substitutes.sh | |
| parent | bafb2357d1ab5f7aef8ce4495f5ab8b835359f63 (diff) | |
* Re-enable support for substitutes in the normaliser.
* A better substitute mechanism.
Instead of generating a store expression for each store path for
which we have a substitute, we can have a single store expression
that builds a generic program that is invoked to build the desired
store path, which is passed as an argument.
This means that operations like `nix-pull' only produce O(1) files
instead of O(N) files in the store when registering N substitutes.
(It consumes O(N) database storage, of course, but that's not a
performance problem).
* Added a test for the substitute mechanism.
* `nix-store --substitute' reads the substitutes from standard input,
instead of from the command line. This prevents us from running
into the kernel's limit on command line length.
Diffstat (limited to 'tests/substitutes.sh')
| -rw-r--r-- | tests/substitutes.sh | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/tests/substitutes.sh b/tests/substitutes.sh new file mode 100644 index 000000000..ea214a8a8 --- /dev/null +++ b/tests/substitutes.sh @@ -0,0 +1,25 @@ +# Instantiate. +storeExpr=$($TOP/src/nix-instantiate/nix-instantiate substitutes.nix) +echo "store expr is $storeExpr" + +# Find the output path. +outPath=$($TOP/src/nix-store/nix-store -qvvvvv "$storeExpr") +echo "output path is $outPath" + +# Instantiate the substitute program. +subExpr=$($TOP/src/nix-instantiate/nix-instantiate substituter.nix) +echo "store expr is $subExpr" + +# Register a fake successor, and a substitute for it. +suc=$NIX_STORE_DIR/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-s.store +(echo $suc && echo $subExpr && echo "/substituter" && echo 3 && echo $outPath && echo Hallo && echo Wereld) | $TOP/src/nix-store/nix-store --substitute +$TOP/src/nix-store/nix-store --successor $storeExpr $suc + +# Register a substitute for the output path. +(echo $outPath && echo $subExpr && echo "/substituter" && echo 3 && echo $outPath && echo Hallo && echo Wereld) | $TOP/src/nix-store/nix-store --substitute + + +$TOP/src/nix-store/nix-store -rvvvvv "$storeExpr" + +text=$(cat "$outPath"/hello) +if test "$text" != "Hallo Wereld"; then exit 1; fi |