Eliminate the substituter mechanism

Substitution is now simply a Store -> Store copy operation, most
typically from BinaryCacheStore to LocalStore.

tests/fallback.sh

@@ -1,20 +0,0 @@
-source common.sh
-
-clearStore
-
-drvPath=$(nix-instantiate simple.nix)
-echo "derivation is $drvPath"
-
-outPath=$(nix-store -q --fallback "$drvPath")
-echo "output path is $outPath"
-
-# Build with a substitute that fails.  This should fail.
-export NIX_SUBSTITUTERS=$(pwd)/substituter2.sh
-if nix-store -r "$drvPath"; then echo unexpected fallback; exit 1; fi
-
-# Build with a substitute that fails.  This should fall back to a source build.
-export NIX_SUBSTITUTERS=$(pwd)/substituter2.sh
-nix-store -r --fallback "$drvPath"
-
-text=$(cat "$outPath"/hello)
-if test "$text" != "Hello World!"; then exit 1; fi

tests/local.mk

@@ -3,8 +3,7 @@ check:
 
 nix_tests = \
   init.sh hash.sh lang.sh add.sh simple.sh dependencies.sh \
-  build-hook.sh substitutes.sh substitutes2.sh \
-  fallback.sh nix-push.sh gc.sh gc-concurrent.sh \
+  build-hook.sh nix-push.sh gc.sh gc-concurrent.sh \
   referrers.sh user-envs.sh logging.sh nix-build.sh misc.sh fixed.sh \
   gc-runtime.sh install-package.sh check-refs.sh filter-source.sh \
   remote-store.sh export.sh export-graph.sh \

tests/substituter.sh

@@ -1,37 +0,0 @@
-#! /bin/sh -e
-echo
-echo substituter args: $* >&2
-
-if test $1 = "--query"; then
-    while read cmd args; do
-        echo "CMD = $cmd, ARGS = $args" >&2
-        if test "$cmd" = "have"; then
-            for path in $args; do 
-                read path
-                if grep -q "$path" $TEST_ROOT/sub-paths; then
-                    echo $path
-                fi
-            done
-            echo
-        elif test "$cmd" = "info"; then
-            for path in $args; do
-                echo $path
-                echo "" # deriver
-                echo 0 # nr of refs
-                echo $((1 * 1024 * 1024)) # download size
-                echo $((2 * 1024 * 1024)) # nar size
-            done
-            echo
-        else
-            echo "bad command $cmd"
-            exit 1
-        fi
-    done
-elif test $1 = "--substitute"; then
-    mkdir $2
-    echo "Hallo Wereld" > $2/hello
-    echo # no expected hash
-else
-    echo "unknown substituter operation"
-    exit 1
-fi

tests/substituter2.sh

@@ -1,33 +0,0 @@
-#! /bin/sh -e
-echo
-echo substituter2 args: $* >&2
-
-if test $1 = "--query"; then
-    while read cmd args; do
-        if test "$cmd" = have; then
-            for path in $args; do
-                if grep -q "$path" $TEST_ROOT/sub-paths; then
-                    echo $path
-                fi
-            done
-            echo
-        elif test "$cmd" = info; then
-            for path in $args; do
-                echo $path
-                echo "" # deriver
-                echo 0 # nr of refs
-                echo 0 # download size
-                echo 0 # nar size
-            done
-            echo
-        else
-            echo "bad command $cmd"
-            exit 1
-        fi
-    done
-elif test $1 = "--substitute"; then
-    exit 1
-else
-    echo "unknown substituter operation"
-    exit 1
-fi

tests/substitutes.sh

@@ -1,22 +0,0 @@
-source common.sh
-
-clearStore
-
-# Instantiate.
-drvPath=$(nix-instantiate simple.nix)
-echo "derivation is $drvPath"
-
-# Find the output path.
-outPath=$(nix-store -qvv "$drvPath")
-echo "output path is $outPath"
-
-echo $outPath > $TEST_ROOT/sub-paths
-
-export NIX_SUBSTITUTERS=$(pwd)/substituter.sh
-
-nix-store -r "$drvPath" --dry-run 2>&1 | grep -q "1.00 MiB.*2.00 MiB"
-
-nix-store -rvv "$drvPath"
-
-text=$(cat "$outPath"/hello)
-if test "$text" != "Hallo Wereld"; then echo "wrong substitute output: $text"; exit 1; fi

tests/substitutes2.sh

@@ -1,21 +0,0 @@
-source common.sh
-
-clearStore
-
-# Instantiate.
-drvPath=$(nix-instantiate simple.nix)
-echo "derivation is $drvPath"
-
-# Find the output path.
-outPath=$(nix-store -qvvvvv "$drvPath")
-echo "output path is $outPath"
-
-echo $outPath > $TEST_ROOT/sub-paths
-
-# First try a substituter that fails, then one that succeeds
-export NIX_SUBSTITUTERS=$(pwd)/substituter2.sh:$(pwd)/substituter.sh
-
-nix-store -j0 -rvv "$drvPath"
-
-text=$(cat "$outPath"/hello)
-if test "$text" != "Hallo Wereld"; then echo "wrong substitute output: $text"; exit 1; fi