10 files changed, 68 insertions, 40 deletions
diff --git a/tests/common.sh.in b/tests/common.sh.in
index 73fe77345..308126094 100644
--- a/tests/common.sh.in
+++ b/tests/common.sh.in
@@ -1,6 +1,6 @@
 set -e
 
-export TEST_ROOT=$(realpath ${TMPDIR:-/tmp}/nix-test)
+export TEST_ROOT=$(realpath ${TMPDIR:-/tmp}/nix-test)/${TEST_NAME:-default}
 export NIX_STORE_DIR
 if ! NIX_STORE_DIR=$(readlink -f $TEST_ROOT/store 2> /dev/null); then
     # Maybe the build directory is symlinked.
@@ -11,6 +11,7 @@ export NIX_LOCALSTATE_DIR=$TEST_ROOT/var
 export NIX_LOG_DIR=$TEST_ROOT/var/log/nix
 export NIX_STATE_DIR=$TEST_ROOT/var/nix
 export NIX_CONF_DIR=$TEST_ROOT/etc
+export NIX_DAEMON_SOCKET_PATH=$TEST_ROOT/daemon-socket
 unset NIX_USER_CONF_FILES
 export _NIX_TEST_SHARED=$TEST_ROOT/shared
 if [[ -n $NIX_STORE ]]; then
@@ -76,7 +77,7 @@ startDaemon() {
     rm -f $NIX_STATE_DIR/daemon-socket/socket
     nix-daemon &
     for ((i = 0; i < 30; i++)); do
-        if [ -e $NIX_STATE_DIR/daemon-socket/socket ]; then break; fi
+        if [ -e $NIX_DAEMON_SOCKET_PATH ]; then break; fi
         sleep 1
     done
     pidDaemon=$!
diff --git a/tests/gc-auto.sh b/tests/gc-auto.sh
index e593697a9..3add896c6 100644
--- a/tests/gc-auto.sh
+++ b/tests/gc-auto.sh
@@ -13,24 +13,32 @@ fake_free=$TEST_ROOT/fake-free
 export _NIX_TEST_FREE_SPACE_FILE=$fake_free
 echo 1100 > $fake_free
 
+fifoLock=$TEST_ROOT/fifoLock
+mkfifo "$fifoLock"
+
 expr=$(cat <<EOF
 with import ./config.nix; mkDerivation {
   name = "gc-A";
   buildCommand = ''
     set -x
     [[ \$(ls \$NIX_STORE/*-garbage? | wc -l) = 3 ]]
+
     mkdir \$out
     echo foo > \$out/bar
-    echo 1...
-    sleep 2
-    echo 200 > ${fake_free}.tmp1
+
+    # Pretend that we run out of space
+    echo 100 > ${fake_free}.tmp1
     mv ${fake_free}.tmp1 $fake_free
-    echo 2...
-    sleep 2
-    echo 3...
-    sleep 2
-    echo 4...
-    [[ \$(ls \$NIX_STORE/*-garbage? | wc -l) = 1 ]]
+
+    # Wait for the GC to run
+    for i in {1..20}; do
+        echo ''\${i}...
+        if [[ \$(ls \$NIX_STORE/*-garbage? | wc -l) = 1 ]]; then
+            exit 0
+        fi
+        sleep 1
+    done
+    exit 1
   '';
 }
 EOF
@@ -43,15 +51,9 @@ with import ./config.nix; mkDerivation {
     set -x
     mkdir \$out
     echo foo > \$out/bar
-    echo 1...
-    sleep 2
-    echo 200 > ${fake_free}.tmp2
-    mv ${fake_free}.tmp2 $fake_free
-    echo 2...
-    sleep 2
-    echo 3...
-    sleep 2
-    echo 4...
+
+    # Wait for the first build to finish
+    cat "$fifoLock"
   '';
 }
 EOF
@@ -59,12 +61,19 @@ EOF
 
 nix build --impure -v -o $TEST_ROOT/result-A -L --expr "$expr" \
     --min-free 1000 --max-free 2000 --min-free-check-interval 1 &
-pid=$!
+pid1=$!
 
 nix build --impure -v -o $TEST_ROOT/result-B -L --expr "$expr2" \
-    --min-free 1000 --max-free 2000 --min-free-check-interval 1
+    --min-free 1000 --max-free 2000 --min-free-check-interval 1 &
+pid2=$!
 
-wait "$pid"
+# Once the first build is done, unblock the second one.
+# If the first build fails, we need to postpone the failure to still allow
+# the second one to finish
+wait "$pid1" || FIRSTBUILDSTATUS=$?
+echo "unlock" > $fifoLock
+( exit ${FIRSTBUILDSTATUS:-0} )
+wait "$pid2"
 
 [[ foo = $(cat $TEST_ROOT/result-A/bar) ]]
 [[ foo = $(cat $TEST_ROOT/result-B/bar) ]]
diff --git a/tests/gc-concurrent.builder.sh b/tests/gc-concurrent.builder.sh
index 0cd67df3a..bb6dcd4cf 100644
--- a/tests/gc-concurrent.builder.sh
+++ b/tests/gc-concurrent.builder.sh
@@ -1,7 +1,10 @@
+echo "Build started" > "$lockFifo"
+
 mkdir $out
 echo $(cat $input1/foo)$(cat $input2/bar) > $out/foobar
 
-sleep 10
+# Wait for someone to write on the fifo
+cat "$lockFifo"
 
 # $out should not have been GC'ed while we were sleeping, but just in
 # case...
diff --git a/tests/gc-concurrent.nix b/tests/gc-concurrent.nix
index 21671ea2c..0aba1f983 100644
--- a/tests/gc-concurrent.nix
+++ b/tests/gc-concurrent.nix
@@ -1,5 +1,7 @@
 with import ./config.nix;
 
+{ lockFifo ? null }:
+
 rec {
 
   input1 = mkDerivation {
@@ -16,6 +18,7 @@ rec {
     name = "gc-concurrent";
     builder = ./gc-concurrent.builder.sh;
     inherit input1 input2;
+    inherit lockFifo;
   };
 
   test2 = mkDerivation {
diff --git a/tests/gc-concurrent.sh b/tests/gc-concurrent.sh
index d395930ca..2c6622c62 100644
--- a/tests/gc-concurrent.sh
+++ b/tests/gc-concurrent.sh
@@ -2,7 +2,10 @@ source common.sh
 
 clearStore
 
-drvPath1=$(nix-instantiate gc-concurrent.nix -A test1)
+lockFifo1=$TEST_ROOT/test1.fifo
+mkfifo "$lockFifo1"
+
+drvPath1=$(nix-instantiate gc-concurrent.nix -A test1 --argstr lockFifo "$lockFifo1")
 outPath1=$(nix-store -q $drvPath1)
 
 drvPath2=$(nix-instantiate gc-concurrent.nix -A test2)
@@ -22,19 +25,16 @@ ln -s $outPath3 "$NIX_STATE_DIR"/gcroots/foo2
 nix-store -rvv "$drvPath1" &
 pid1=$!
 
-# Start build #2 in the background after 10 seconds.
-(sleep 10 && nix-store -rvv "$drvPath2") &
-pid2=$!
+# Wait for the build of $drvPath1 to start
+cat $lockFifo1
 
 # Run the garbage collector while the build is running.
-sleep 6
 nix-collect-garbage
 
-# Wait for build #1/#2 to finish.
+# Unlock the build of $drvPath1
+echo "" > $lockFifo1
 echo waiting for pid $pid1 to finish...
 wait $pid1
-echo waiting for pid $pid2 to finish...
-wait $pid2
 
 # Check that the root of build #1 and its dependencies haven't been
 # deleted.  The should not be deleted by the GC because they were
@@ -42,8 +42,9 @@ wait $pid2
 cat $outPath1/foobar
 cat $outPath1/input-2/bar
 
-# Check that build #2 has succeeded.  It should succeed because the
-# derivation is a GC root.
+# Check that the build build $drvPath2 succeeds.
+# It should succeed because the derivation is a GC root.
+nix-store -rvv "$drvPath2"
 cat $outPath2/foobar
 
 rm -f "$NIX_STATE_DIR"/gcroots/foo*
diff --git a/tests/gc-concurrent2.builder.sh b/tests/gc-concurrent2.builder.sh
index 4bfb33103..4f6c58b96 100644
--- a/tests/gc-concurrent2.builder.sh
+++ b/tests/gc-concurrent2.builder.sh
@@ -3,5 +3,3 @@ echo $(cat $input1/foo)$(cat $input2/bar)xyzzy > $out/foobar
 
 # Check that the GC hasn't deleted the lock on our output.
 test -e "$out.lock"
-
-sleep 6
diff --git a/tests/init.sh b/tests/init.sh
index 90f1bdcb6..f9ced6b0d 100644
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -18,6 +18,7 @@ build-users-group =
 keep-derivations = false
 sandbox = false
 experimental-features = nix-command flakes
+gc-reserved-space = 0
 flake-registry = $TEST_ROOT/registry.json
 include nix.conf.extra
 EOF
diff --git a/tests/local.mk b/tests/local.mk
index 77247f9f6..81366160b 100644
--- a/tests/local.mk
+++ b/tests/local.mk
@@ -41,4 +41,4 @@ tests-environment = NIX_REMOTE= $(bash) -e
 
 clean-files += $(d)/common.sh $(d)/config.nix
 
-installcheck: $(d)/common.sh $(d)/config.nix $(d)/plugins/libplugintest.$(SO_EXT)
+test-deps += tests/common.sh tests/config.nix tests/plugins/libplugintest.$(SO_EXT)
diff --git a/tests/misc.sh b/tests/misc.sh
index fd4908e25..a81c9dbb1 100644
--- a/tests/misc.sh
+++ b/tests/misc.sh
@@ -16,6 +16,11 @@ nix-env --foo 2>&1 | grep "no operation"
 nix-env -q --foo 2>&1 | grep "unknown flag"
 
 # Eval Errors.
-eval_res=$(nix-instantiate --eval -E 'let a = {} // a; in a.foo' 2>&1 || true)
-echo $eval_res | grep "(string) (1:15)"
-echo $eval_res | grep "infinite recursion encountered"
+eval_arg_res=$(nix-instantiate --eval -E 'let a = {} // a; in a.foo' 2>&1 || true)
+echo $eval_arg_res | grep "at: (1:15) from string"
+echo $eval_arg_res | grep "infinite recursion encountered"
+
+eval_stdin_res=$(echo 'let a = {} // a; in a.foo' | nix-instantiate --eval -E - 2>&1 || true)
+echo $eval_stdin_res | grep "at: (1:15) from stdin"
+echo $eval_stdin_res | grep "infinite recursion encountered"
+
diff --git a/tests/nix-shell.sh b/tests/nix-shell.sh
index 235e2a5ff..650904057 100644
--- a/tests/nix-shell.sh
+++ b/tests/nix-shell.sh
@@ -55,3 +55,10 @@ chmod a+rx $TEST_ROOT/shell.shebang.rb
 
 output=$($TEST_ROOT/shell.shebang.rb abc ruby)
 [ "$output" = '-e load("'"$TEST_ROOT"'/shell.shebang.rb") -- abc ruby' ]
+
+# Test 'nix develop'.
+nix develop -f shell.nix shellDrv -c bash -c '[[ -n $stdenv ]]'
+
+# Test 'nix print-dev-env'.
+source <(nix print-dev-env -f shell.nix shellDrv)
+[[ -n $stdenv ]]