Merge branch 'pu/json-hooks-21.04' into 'main'

JSON Hooks 0.2

See merge request apt-team/apt!166

1 files changed, 148 insertions, 21 deletions

diff --git a/test/integration/test-apt-cli-json-hooks b/test/integration/test-apt-cli-json-hooks
index 298fae072..3ec470284 100755
--- a/test/integration/test-apt-cli-json-hooks
+++ b/test/integration/test-apt-cli-json-hooks
@@ -4,6 +4,10 @@ set -e
 TESTDIR="$(readlink -f "$(dirname "$0")")"
 . "$TESTDIR/framework"
 
+getoriginfromsuite() { echo 'Oranges'; }
+getlabelfromsuite() { echo 'Lemons'; }
+getversionfromsuite() { echo 'Volkamer'; }
+
 setupenvironment
 configarchitecture "i386"
 
@@ -14,10 +18,13 @@ insertpackage 'unstable' 'foo' 'all' '1.0' '' '' "$DESCR
  .
  and paragraphs and everything."
 insertpackage 'testing' 'bar' 'i386' '2.0' '' '' "$DESCR2"
+insertpackage 'testing' 'upgrade' 'i386' '2.0'
+insertinstalledpackage 'upgrade' 'i386' '1.0'
 
 setupaptarchive
 
 APTARCHIVE="$(readlink -f ./aptarchive)"
+export TEST_HOOK_VERSION=0.2
 
 cat >> json-hook.sh << EOF
 #!/bin/bash
@@ -28,7 +35,7 @@ while true; do
 
 	if echo "\$request" | grep -q ".hello"; then
 		echo "HOOK: HELLO"
-		printf '{"jsonrpc": "2.0", "result": {"version": "0.1"}, "id": 0}\n\n' >&\$APT_HOOK_SOCKET
+		printf '{"jsonrpc": "2.0", "result": {"version": "'\$TEST_HOOK_VERSION'"}, "id": 0}\n\n' >&\$APT_HOOK_SOCKET
 	fi
 
 	if echo "\$request" | grep -q ".bye"; then
@@ -48,13 +55,14 @@ HOOK="$(readlink -f ./json-hook.sh)"
 # Setup all hooks
 cat >> rootdir/etc/apt/apt.conf.d/99-json-hooks << EOF
 	AptCli::Hooks::Install:: "$HOOK";
+	AptCli::Hooks::Upgrade:: "$HOOK";
 	AptCli::Hooks::Search:: "$HOOK";
 EOF
 
 
 ############################# Success search #######################
 testsuccessequal 'HOOK: HELLO
-HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1"]}}
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
 HOOK: empty
 HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.search.pre","params":{"command":"search","search-terms":["foo"],"unknown-packages":[],"packages":[]}}
 HOOK: empty
@@ -65,7 +73,7 @@ foo/unstable 1.0 all
   Some description that has a unusual word xxyyzz and aabbcc and a UPPERCASE
 
 HOOK: HELLO
-HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1"]}}
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
 HOOK: empty
 HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.search.post","params":{"command":"search","search-terms":["foo"],"unknown-packages":[],"packages":[]}}
 HOOK: empty
@@ -73,7 +81,7 @@ HOOK: BYE' apt search foo
 
 ############################# Failed search #######################
 testsuccessequal 'HOOK: HELLO
-HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1"]}}
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
 HOOK: empty
 HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.search.pre","params":{"command":"search","search-terms":["foox"],"unknown-packages":[],"packages":[]}}
 HOOK: empty
@@ -81,7 +89,7 @@ HOOK: BYE
 Sorting...
 Full Text Search...
 HOOK: HELLO
-HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1"]}}
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
 HOOK: empty
 HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.search.fail","params":{"command":"search","search-terms":["foox"],"unknown-packages":[],"packages":[]}}
 HOOK: empty
@@ -93,7 +101,7 @@ HOOK: BYE' apt search foox
 testfailureequal 'Reading package lists...
 Building dependency tree...
 HOOK: HELLO
-HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1"]}}
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
 HOOK: empty
 HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.fail","params":{"command":"install","search-terms":["foxxx"],"unknown-packages":["foxxx"],"packages":[]}}
 HOOK: empty
@@ -105,23 +113,142 @@ E: Unable to locate package foxxx' apt install foxxx
 testsuccessequal 'Reading package lists...
 Building dependency tree...
 HOOK: HELLO
-HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1"]}}
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
 HOOK: empty
-HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.pre-prompt","params":{"command":"install","search-terms":["foo"],"unknown-packages":[],"packages":[{"id":1,"name":"foo","architecture":"i386","mode":"install","automatic":false,"versions":{"candidate":{"id":1,"version":"1.0","architecture":"all","pin":500},"install":{"id":1,"version":"1.0","architecture":"all","pin":500}}}]}}
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.pre-prompt","params":{"command":"install","search-terms":["foo"],"unknown-packages":[],"packages":[{"id":2,"name":"foo","architecture":"i386","mode":"install","automatic":false,"versions":{"candidate":{"id":2,"version":"1.0","architecture":"all","pin":500,"origins":[{"archive":"unstable","codename":"sid","origin":"Oranges","label":"Lemons","site":""}]},"install":{"id":2,"version":"1.0","architecture":"all","pin":500,"origins":[{"archive":"unstable","codename":"sid","origin":"Oranges","label":"Lemons","site":""}]}}}]}}
 HOOK: empty
 HOOK: BYE
 The following NEW packages will be installed:
   foo
-0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
-Inst foo (1.0 unstable [all])
-Conf foo (1.0 unstable [all])
 HOOK: HELLO
-HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1"]}}
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
+HOOK: empty
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.package-list","params":{"command":"install","search-terms":["foo"],"unknown-packages":[],"packages":[{"id":2,"name":"foo","architecture":"i386","mode":"install","automatic":false,"versions":{"candidate":{"id":2,"version":"1.0","architecture":"all","pin":500,"origins":[{"archive":"unstable","codename":"sid","origin":"Oranges","label":"Lemons","site":""}]},"install":{"id":2,"version":"1.0","architecture":"all","pin":500,"origins":[{"archive":"unstable","codename":"sid","origin":"Oranges","label":"Lemons","site":""}]}}}]}}
+HOOK: empty
+HOOK: BYE
+0 upgraded, 1 newly installed, 0 to remove and 1 not upgraded.
+HOOK: HELLO
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
+HOOK: empty
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.statistics","params":{"command":"install","search-terms":["foo"],"unknown-packages":[],"packages":[{"id":2,"name":"foo","architecture":"i386","mode":"install","automatic":false,"versions":{"candidate":{"id":2,"version":"1.0","architecture":"all","pin":500,"origins":[{"archive":"unstable","codename":"sid","origin":"Oranges","label":"Lemons","site":""}]},"install":{"id":2,"version":"1.0","architecture":"all","pin":500,"origins":[{"archive":"unstable","codename":"sid","origin":"Oranges","label":"Lemons","site":""}]}}}]}}
+HOOK: empty
+HOOK: BYE
+Inst foo (1.0 Lemons:unstable [all])
+Conf foo (1.0 Lemons:unstable [all])
+HOOK: HELLO
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
 HOOK: empty
-HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.post","params":{"command":"install","search-terms":["foo"],"unknown-packages":[],"packages":[{"id":1,"name":"foo","architecture":"i386","mode":"install","automatic":false,"versions":{"candidate":{"id":1,"version":"1.0","architecture":"all","pin":500},"install":{"id":1,"version":"1.0","architecture":"all","pin":500}}}]}}
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.post","params":{"command":"install","search-terms":["foo"],"unknown-packages":[],"packages":[{"id":2,"name":"foo","architecture":"i386","mode":"install","automatic":false,"versions":{"candidate":{"id":2,"version":"1.0","architecture":"all","pin":500,"origins":[{"archive":"unstable","codename":"sid","origin":"Oranges","label":"Lemons","site":""}]},"install":{"id":2,"version":"1.0","architecture":"all","pin":500,"origins":[{"archive":"unstable","codename":"sid","origin":"Oranges","label":"Lemons","site":""}]}}}]}}
 HOOK: empty
 HOOK: BYE' apt install foo -s
 
+############################# Failed dist-upgrade #######################
+
+testfailureequal 'Reading package lists...
+Building dependency tree...
+HOOK: HELLO
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
+HOOK: empty
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.fail","params":{"command":"dist-upgrade","search-terms":["foxxx"],"unknown-packages":["foxxx"],"packages":[]}}
+HOOK: empty
+HOOK: BYE
+E: Unable to locate package foxxx' apt dist-upgrade foxxx
+
+############################# Success install #######################
+
+testsuccessequal 'Reading package lists...
+Building dependency tree...
+Calculating upgrade...
+HOOK: HELLO
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
+HOOK: empty
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.pre-prompt","params":{"command":"dist-upgrade","search-terms":[],"unknown-packages":[],"packages":[{"id":1,"name":"upgrade","architecture":"i386","mode":"upgrade","automatic":false,"versions":{"candidate":{"id":1,"version":"2.0","architecture":"i386","pin":500,"origins":[{"archive":"testing","codename":"testing","origin":"Oranges","label":"Lemons","site":""}]},"install":{"id":1,"version":"2.0","architecture":"i386","pin":500,"origins":[{"archive":"testing","codename":"testing","origin":"Oranges","label":"Lemons","site":""}]},"current":{"id":4,"version":"1.0","architecture":"i386","pin":100,"origins":[]}}}]}}
+HOOK: empty
+HOOK: BYE
+The following packages will be upgraded:
+  upgrade
+HOOK: HELLO
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
+HOOK: empty
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.package-list","params":{"command":"dist-upgrade","search-terms":[],"unknown-packages":[],"packages":[{"id":1,"name":"upgrade","architecture":"i386","mode":"upgrade","automatic":false,"versions":{"candidate":{"id":1,"version":"2.0","architecture":"i386","pin":500,"origins":[{"archive":"testing","codename":"testing","origin":"Oranges","label":"Lemons","site":""}]},"install":{"id":1,"version":"2.0","architecture":"i386","pin":500,"origins":[{"archive":"testing","codename":"testing","origin":"Oranges","label":"Lemons","site":""}]},"current":{"id":4,"version":"1.0","architecture":"i386","pin":100,"origins":[]}}}]}}
+HOOK: empty
+HOOK: BYE
+1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
+HOOK: HELLO
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
+HOOK: empty
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.statistics","params":{"command":"dist-upgrade","search-terms":[],"unknown-packages":[],"packages":[{"id":1,"name":"upgrade","architecture":"i386","mode":"upgrade","automatic":false,"versions":{"candidate":{"id":1,"version":"2.0","architecture":"i386","pin":500,"origins":[{"archive":"testing","codename":"testing","origin":"Oranges","label":"Lemons","site":""}]},"install":{"id":1,"version":"2.0","architecture":"i386","pin":500,"origins":[{"archive":"testing","codename":"testing","origin":"Oranges","label":"Lemons","site":""}]},"current":{"id":4,"version":"1.0","architecture":"i386","pin":100,"origins":[]}}}]}}
+HOOK: empty
+HOOK: BYE
+Inst upgrade [1.0] (2.0 Lemons:testing [i386])
+Conf upgrade (2.0 Lemons:testing [i386])
+HOOK: HELLO
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
+HOOK: empty
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.post","params":{"command":"dist-upgrade","search-terms":[],"unknown-packages":[],"packages":[{"id":1,"name":"upgrade","architecture":"i386","mode":"upgrade","automatic":false,"versions":{"candidate":{"id":1,"version":"2.0","architecture":"i386","pin":500,"origins":[{"archive":"testing","codename":"testing","origin":"Oranges","label":"Lemons","site":""}]},"install":{"id":1,"version":"2.0","architecture":"i386","pin":500,"origins":[{"archive":"testing","codename":"testing","origin":"Oranges","label":"Lemons","site":""}]},"current":{"id":4,"version":"1.0","architecture":"i386","pin":100,"origins":[]}}}]}}
+HOOK: empty
+HOOK: BYE' apt dist-upgrade -s
+
+
+################## version 0.1 #########################
+TEST_HOOK_VERSION=0.1
+
+testequal 'Reading package lists...
+Building dependency tree...
+Calculating upgrade...
+HOOK: HELLO
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
+HOOK: empty
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.pre-prompt","params":{"command":"dist-upgrade","search-terms":[],"unknown-packages":[],"packages":[{"id":1,"name":"upgrade","architecture":"i386","mode":"install","automatic":false,"versions":{"candidate":{"id":1,"version":"2.0","architecture":"i386","pin":500,"origins":[{"archive":"testing","codename":"testing","origin":"Oranges","label":"Lemons","site":""}]},"install":{"id":1,"version":"2.0","architecture":"i386","pin":500,"origins":[{"archive":"testing","codename":"testing","origin":"Oranges","label":"Lemons","site":""}]},"current":{"id":4,"version":"1.0","architecture":"i386","pin":100,"origins":[]}}}]}}
+HOOK: empty
+HOOK: BYE
+The following packages will be upgraded:
+  upgrade
+HOOK: HELLO
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
+HOOK: empty
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.package-list","params":{"command":"dist-upgrade","search-terms":[],"unknown-packages":[],"packages":[{"id":1,"name":"upgrade","architecture":"i386","mode":"install","automatic":false,"versions":{"candidate":{"id":1,"version":"2.0","architecture":"i386","pin":500,"origins":[{"archive":"testing","codename":"testing","origin":"Oranges","label":"Lemons","site":""}]},"install":{"id":1,"version":"2.0","architecture":"i386","pin":500,"origins":[{"archive":"testing","codename":"testing","origin":"Oranges","label":"Lemons","site":""}]},"current":{"id":4,"version":"1.0","architecture":"i386","pin":100,"origins":[]}}}]}}
+HOOK: empty
+HOOK: BYE
+1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
+HOOK: HELLO
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
+HOOK: empty
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.statistics","params":{"command":"dist-upgrade","search-terms":[],"unknown-packages":[],"packages":[{"id":1,"name":"upgrade","architecture":"i386","mode":"install","automatic":false,"versions":{"candidate":{"id":1,"version":"2.0","architecture":"i386","pin":500,"origins":[{"archive":"testing","codename":"testing","origin":"Oranges","label":"Lemons","site":""}]},"install":{"id":1,"version":"2.0","architecture":"i386","pin":500,"origins":[{"archive":"testing","codename":"testing","origin":"Oranges","label":"Lemons","site":""}]},"current":{"id":4,"version":"1.0","architecture":"i386","pin":100,"origins":[]}}}]}}
+HOOK: empty
+HOOK: BYE
+Inst upgrade [1.0] (2.0 Lemons:testing [i386])
+Conf upgrade (2.0 Lemons:testing [i386])
+HOOK: HELLO
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
+HOOK: empty
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.install.post","params":{"command":"dist-upgrade","search-terms":[],"unknown-packages":[],"packages":[{"id":1,"name":"upgrade","architecture":"i386","mode":"install","automatic":false,"versions":{"candidate":{"id":1,"version":"2.0","architecture":"i386","pin":500,"origins":[{"archive":"testing","codename":"testing","origin":"Oranges","label":"Lemons","site":""}]},"install":{"id":1,"version":"2.0","architecture":"i386","pin":500,"origins":[{"archive":"testing","codename":"testing","origin":"Oranges","label":"Lemons","site":""}]},"current":{"id":4,"version":"1.0","architecture":"i386","pin":100,"origins":[]}}}]}}
+HOOK: empty
+HOOK: BYE
+W: Hook '$HOOK' uses deprecated 0.1 protocol
+W: Hook '$HOOK' uses deprecated 0.1 protocol
+W: Hook '$HOOK' uses deprecated 0.1 protocol
+W: Hook '$HOOK' uses deprecated 0.1 protocol' apt dist-upgrade -s
+
+
+################## Wrong version #########################
+TEST_HOOK_VERSION=42
+
+testfailureequal 'Reading package lists...
+Building dependency tree...
+Calculating upgrade...
+HOOK: HELLO
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
+HOOK: empty
+HOOK: HELLO
+HOOK: request {"jsonrpc":"2.0","method":"org.debian.apt.hooks.hello","id":0,"params":{"versions":["0.1","0.2"]}}
+HOOK: empty
+E: Unknown hook version in handshake from hook '$HOOK': {"jsonrpc": "2.0", "result": {"version": "42"}, "id": 0}
+E: Sub-process '$HOOK' returned an error code (1)
+E: Failure running hook '$HOOK'
+E: Unknown hook version in handshake from hook '$HOOK': {"jsonrpc": "2.0", "result": {"version": "42"}, "id": 0}
+E: Sub-process '$HOOK' returned an error code (1)
+E: Failure running hook '$HOOK'' apt dist-upgrade -s
 ################## Error in hello response #########################
 
 cat > json-hook.sh << EOF
@@ -133,7 +260,7 @@ while true; do
 	read empty <&\$APT_HOOK_SOCKET
 
 	if echo "\$request" | grep -q ".hello"; then
-		printf '{"jsonrpc": "2.0", "error": {"version": "0.1"}, "id": 0}\n\n' >&\$APT_HOOK_SOCKET
+		printf '{"jsonrpc": "2.0", "error": {"version": "0.2"}, "id": 0}\n\n' >&\$APT_HOOK_SOCKET
 		break
 	fi
 done
@@ -143,8 +270,8 @@ EOF
 
 testfailureequal 'Reading package lists...
 Building dependency tree...
-E: Hook '$HOOK' reported an error during hello: {"jsonrpc": "2.0", "error": {"version": "0.1"}, "id": 0}
-E: Hook '$HOOK' reported an error during hello: {"jsonrpc": "2.0", "error": {"version": "0.1"}, "id": 0}' apt install foo -s
+E: Hook '$HOOK' reported an error during hello: {"jsonrpc": "2.0", "error": {"version": "0.2"}, "id": 0}
+E: Hook '$HOOK' reported an error during hello: {"jsonrpc": "2.0", "error": {"version": "0.2"}, "id": 0}' apt install foo -s
 
 ################## Missing separator line #########################
 cat > json-hook.sh << EOF
@@ -156,7 +283,7 @@ while true; do
 	read empty <&\$APT_HOOK_SOCKET
 
 	if echo "\$request" | grep -q ".hello"; then
-		printf '{"jsonrpc": "2.0", "result": {"version": "0.1"}, "id": 0}\n' >&\$APT_HOOK_SOCKET
+		printf '{"jsonrpc": "2.0", "result": {"version": "0.2"}, "id": 0}\n' >&\$APT_HOOK_SOCKET
 		break
 	fi
 done
@@ -179,7 +306,7 @@ while true; do
 	read empty <&\$APT_HOOK_SOCKET
 
 	if echo "\$request" | grep -q ".hello"; then
-		printf '{"jsonrpc": "2.0", "result": {"version": "0.1"}, "id": 0}\nXX' >&\$APT_HOOK_SOCKET
+		printf '{"jsonrpc": "2.0", "result": {"version": "0.2"}, "id": 0}\nXX' >&\$APT_HOOK_SOCKET
 		break
 	fi
 done
@@ -202,9 +329,9 @@ testsuccessequal 'Reading package lists...
 Building dependency tree...
 The following NEW packages will be installed:
   foo
-0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
-Inst foo (1.0 unstable [all])
-Conf foo (1.0 unstable [all])' apt install foo -s
+0 upgraded, 1 newly installed, 0 to remove and 1 not upgraded.
+Inst foo (1.0 Lemons:unstable [all])
+Conf foo (1.0 Lemons:unstable [all])' apt install foo -s