diff --git a/.gitignore b/.gitignore
index 1a87a99..5494ef9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,5 @@ coverage
 datastore.nims
 nimcache
 TODO
+nimble.develop
+nimble.paths
diff --git a/config.nims b/config.nims
index 052a576..ed3a531 100644
--- a/config.nims
+++ b/config.nims
@@ -10,3 +10,7 @@ when (NimMajor, NimMinor) == (1, 2):
 
 when (NimMajor, NimMinor) > (1, 2):
   switch("hint", "XCannotRaiseY:off")
+# begin Nimble config (version 2)
+when withDir(thisDir(), system.fileExists("nimble.paths")):
+  include "nimble.paths"
+# end Nimble config
diff --git a/datastore.nimble b/datastore.nimble
index 4183fed..b0a61ff 100644
--- a/datastore.nimble
+++ b/datastore.nimble
@@ -13,8 +13,7 @@ requires "nim >= 1.2.0",
          "sqlite3_abi",
          "leveldbstatic >= 0.1.2",
          "stew",
-         "unittest2",
-         "upraises >= 0.1.0 & < 0.2.0"
+         "unittest2"
 
 task coverage, "generates code coverage report":
   var (output, exitCode) = gorgeEx("which lcov")
diff --git a/datastore/datastore.nim b/datastore/datastore.nim
index f664ec0..47f339b 100644
--- a/datastore/datastore.nim
+++ b/datastore/datastore.nim
@@ -1,7 +1,8 @@
+{.push raises: [].}
+
 import pkg/chronos
 import pkg/questionable
 import pkg/questionable/results
-import pkg/upraises
 
 import ./key
 import ./query
@@ -9,8 +10,6 @@ import ./types
 
 export key, query, types
 
-push: {.upraises: [].}
-
 type
   BatchEntry* = tuple[key: Key, data: seq[byte]]
   Function*[T, U] = proc(value: T): U {.raises: [CatchableError], gcsafe, closure.}
@@ -76,4 +75,4 @@ method modifyGet*(self: Datastore, key: Key, fn: ModifyGet): Future[?!seq[byte]]
   ## only the last auxillary value is returned.
   ##
 
-  raiseAssert("Not implemented!")
\ No newline at end of file
+  raiseAssert("Not implemented!")
diff --git a/datastore/defaultimpl.nim b/datastore/defaultimpl.nim
index 1562263..be7178a 100644
--- a/datastore/defaultimpl.nim
+++ b/datastore/defaultimpl.nim
@@ -1,3 +1,5 @@
+{.push raises: [].}
+
 import pkg/chronos
 import pkg/questionable
 import pkg/questionable/results
diff --git a/datastore/fsds.nim b/datastore/fsds.nim
index 2a58a99..7599fce 100644
--- a/datastore/fsds.nim
+++ b/datastore/fsds.nim
@@ -1,3 +1,5 @@
+{.push raises: [].}
+
 import std/os
 import std/options
 import std/tables
@@ -6,16 +8,12 @@ import std/strutils
 import pkg/chronos
 import pkg/questionable
 import pkg/questionable/results
-from pkg/stew/results as stewResults import get, isErr
-import pkg/upraises
 
 import ./defaultimpl
 import ./datastore
 
 export datastore
 
-push: {.upraises: [].}
-
 type
   FSDatastore* = ref object of Datastore
     root*: string
diff --git a/datastore/key/key.nim b/datastore/key/key.nim
index 83544d4..c66e0be 100644
--- a/datastore/key/key.nim
+++ b/datastore/key/key.nim
@@ -1,3 +1,5 @@
+{.push raises: [].}
+
 import std/algorithm
 import std/hashes
 import std/oids
@@ -7,15 +9,11 @@ import std/strformat
 
 import pkg/questionable
 import pkg/questionable/results
-from pkg/stew/results as stewResults import get, isErr
-import pkg/upraises
 
 import ./namespace
 
 export hashes, namespace
 
-push: {.upraises: [].}
-
 type
   Key* = object
     namespaces*: seq[Namespace]
diff --git a/datastore/key/namespace.nim b/datastore/key/namespace.nim
index 6613c09..bfad62b 100644
--- a/datastore/key/namespace.nim
+++ b/datastore/key/namespace.nim
@@ -1,11 +1,9 @@
+{.push raises: [].}
 
 import std/hashes
 
 import pkg/questionable
 import pkg/questionable/results
-import pkg/upraises
-
-push: {.upraises: [].}
 
 const
   Delimiter* = ":"
diff --git a/datastore/leveldb/leveldbds.nim b/datastore/leveldb/leveldbds.nim
index daad558..29089ec 100644
--- a/datastore/leveldb/leveldbds.nim
+++ b/datastore/leveldb/leveldbds.nim
@@ -1,3 +1,5 @@
+{.push raises: [].}
+
 import std/options
 import std/tables
 import std/os
@@ -8,14 +10,10 @@ import pkg/chronos
 import pkg/questionable
 import pkg/questionable/results
 import pkg/stew/byteutils
-from pkg/stew/results as stewResults import isErr
-import pkg/upraises
 
 import ../datastore
 import ../defaultimpl
 
-push: {.upraises: [].}
-
 type
   LevelDbDatastore* = ref object of Datastore
     db: LevelDb
diff --git a/datastore/mountedds.nim b/datastore/mountedds.nim
index 9102e49..d1c51cd 100644
--- a/datastore/mountedds.nim
+++ b/datastore/mountedds.nim
@@ -1,9 +1,10 @@
+{.push raises: [].}
+
 import std/tables
 
 import pkg/chronos
 import pkg/questionable
 import pkg/questionable/results
-import pkg/upraises
 
 import ./key
 import ./query
@@ -11,8 +12,6 @@ import ./datastore
 
 export key, query
 
-push: {.upraises: [].}
-
 type
   MountedStore* = object
     store*: Datastore
@@ -28,7 +27,7 @@ method mount*(self: MountedDatastore, key: Key, store: Datastore): ?!void {.base
   if key in self.stores:
     return failure("Key already has store mounted!")
 
-  self.stores.add(key, MountedStore(store: store, key: key))
+  self.stores[key] = MountedStore(store: store, key: key)
 
   return success()
 
diff --git a/datastore/query.nim b/datastore/query.nim
index 1c51a6e..94f1a83 100644
--- a/datastore/query.nim
+++ b/datastore/query.nim
@@ -1,4 +1,6 @@
-import pkg/upraises
+
+{.push raises: [].}
+
 import pkg/chronos
 import pkg/questionable
 import pkg/questionable/results
@@ -21,8 +23,8 @@ type
   QueryResponse* = tuple[key: ?Key, data: seq[byte]]
   QueryEndedError* = object of DatastoreError
 
-  GetNext* = proc(): Future[?!QueryResponse] {.upraises: [], gcsafe, closure.}
-  IterDispose* = proc(): Future[?!void] {.upraises: [], gcsafe.}
+  GetNext* = proc(): Future[?!QueryResponse] {.raises: [], gcsafe, closure.}
+  IterDispose* = proc(): Future[?!void] {.raises: [], gcsafe.}
   QueryIter* = ref object
     finished*: bool
     next*: GetNext
@@ -32,7 +34,7 @@ iterator items*(q: QueryIter): Future[?!QueryResponse] =
   while not q.finished:
     yield q.next()
 
-proc defaultDispose(): Future[?!void] {.upraises: [], gcsafe, async.} =
+proc defaultDispose(): Future[?!void] {.gcsafe, async.} =
   return success()
 
 proc new*(T: type QueryIter, dispose = defaultDispose): T =
diff --git a/datastore/sql/sqliteds.nim b/datastore/sql/sqliteds.nim
index b966435..8f16f07 100644
--- a/datastore/sql/sqliteds.nim
+++ b/datastore/sql/sqliteds.nim
@@ -1,3 +1,5 @@
+{.push raises: [].}
+
 import std/times
 import std/options
 
@@ -5,8 +7,6 @@ import pkg/chronos
 import pkg/questionable
 import pkg/questionable/results
 import pkg/sqlite3_abi
-from pkg/stew/results as stewResults import isErr
-import pkg/upraises
 
 import ../datastore
 import ./sqlitedsdb
@@ -14,8 +14,6 @@ import ./sqliteutils
 
 export datastore, sqlitedsdb
 
-push: {.upraises: [].}
-
 type
   SQLiteDatastore* = ref object of Datastore
     readOnly: bool
diff --git a/datastore/sql/sqlitedsdb.nim b/datastore/sql/sqlitedsdb.nim
index 3e34319..6e1d96f 100644
--- a/datastore/sql/sqlitedsdb.nim
+++ b/datastore/sql/sqlitedsdb.nim
@@ -1,17 +1,18 @@
+{.push raises: [].}
+
 import std/os
 import std/strformat
 
 import pkg/questionable
 import pkg/questionable/results
-import pkg/upraises
 
 import ./sqliteutils
 
 type
-  BoundIdCol* = proc (): string {.closure, gcsafe, upraises: [].}
-  BoundVersionCol* = proc (): int64 {.closure, gcsafe, upraises: [].}
-  BoundDataCol* = proc (): seq[byte] {.closure, gcsafe, upraises: [].}
-  BoundTimestampCol* = proc (): int64 {.closure, gcsafe, upraises: [].}
+  BoundIdCol* = proc (): string {.closure, gcsafe, raises: [].}
+  BoundVersionCol* = proc (): int64 {.closure, gcsafe, raises: [].}
+  BoundDataCol* = proc (): seq[byte] {.closure, gcsafe, raises: [].}
+  BoundTimestampCol* = proc (): int64 {.closure, gcsafe, raises: [].}
 
   # feels odd to use `void` for prepared statements corresponding to SELECT
   # queries but it fits with the rest of the SQLite wrapper adapted from
diff --git a/datastore/sql/sqliteutils.nim b/datastore/sql/sqliteutils.nim
index 6cdbabb..c86f707 100644
--- a/datastore/sql/sqliteutils.nim
+++ b/datastore/sql/sqliteutils.nim
@@ -1,7 +1,8 @@
+{.push raises: [].}
+
 import pkg/questionable
 import pkg/questionable/results
 import pkg/sqlite3_abi
-import pkg/upraises
 
 export sqlite3_abi
 
@@ -14,8 +15,6 @@ export sqlite3_abi
 # e.g. `nimble test --forceBuild:on`
 {.passc: "-DSQLITE_ENABLE_COLUMN_METADATA".}
 
-push: {.upraises: [].}
-
 type
   AutoDisposed*[T: ptr|ref] = object
     val*: T
@@ -34,7 +33,7 @@ type
 
   # see https://github.com/arnetheduck/nim-sqlite3-abi/issues/4
   sqlite3_destructor_type_gcsafe =
-    proc (a1: pointer) {.cdecl, gcsafe, upraises: [].}
+    proc (a1: pointer) {.cdecl, gcsafe, raises: [].}
 
 const
   SQLITE_TRANSIENT_GCSAFE* = cast[sqlite3_destructor_type_gcsafe](-1)
diff --git a/datastore/tieredds.nim b/datastore/tieredds.nim
index 0bc0044..36cbc72 100644
--- a/datastore/tieredds.nim
+++ b/datastore/tieredds.nim
@@ -1,17 +1,15 @@
+{.push raises: [].}
+
 import std/sequtils
 
 import pkg/chronos
 import pkg/questionable
 import pkg/questionable/results
-from pkg/stew/results as stewResults import get, isErr
-import pkg/upraises
 
 import ./datastore
 
 export datastore
 
-push: {.upraises: [].}
-
 type
   TieredDatastore* = ref object of Datastore
     stores: seq[Datastore]
diff --git a/datastore/typedds.nim b/datastore/typedds.nim
index dca1b9a..e194a32 100644
--- a/datastore/typedds.nim
+++ b/datastore/typedds.nim
@@ -1,3 +1,5 @@
+{.push raises: [].}
+
 import std/options
 import std/macros
 
diff --git a/tests/datastore/dscommontests.nim b/tests/datastore/dscommontests.nim
index 1e0353c..8d7a218 100644
--- a/tests/datastore/dscommontests.nim
+++ b/tests/datastore/dscommontests.nim
@@ -1,8 +1,5 @@
-import std/options
-
 import pkg/asynctest
 import pkg/chronos
-import pkg/stew/results
 
 import pkg/datastore
 
diff --git a/tests/datastore/leveldb/testleveldbds.nim b/tests/datastore/leveldb/testleveldbds.nim
index 132b285..b059880 100644
--- a/tests/datastore/leveldb/testleveldbds.nim
+++ b/tests/datastore/leveldb/testleveldbds.nim
@@ -5,7 +5,6 @@ from std/algorithm import sort, reversed
 
 import pkg/asynctest
 import pkg/chronos
-import pkg/stew/results
 import pkg/stew/byteutils
 
 import pkg/datastore
diff --git a/tests/datastore/modifycommontests.nim b/tests/datastore/modifycommontests.nim
index d512edc..ea010cd 100644
--- a/tests/datastore/modifycommontests.nim
+++ b/tests/datastore/modifycommontests.nim
@@ -2,7 +2,6 @@ import std/options
 import std/sugar
 import std/random
 import std/sequtils
-import std/strutils
 
 import pkg/asynctest
 import pkg/chronos
diff --git a/tests/datastore/querycommontests.nim b/tests/datastore/querycommontests.nim
index e941464..c3ffd3b 100644
--- a/tests/datastore/querycommontests.nim
+++ b/tests/datastore/querycommontests.nim
@@ -1,12 +1,3 @@
-import std/options
-import std/sequtils
-from std/algorithm import sort, reversed
-
-import pkg/asynctest
-import pkg/chronos
-import pkg/stew/results
-import pkg/stew/byteutils
-
 import pkg/datastore
 
 template queryTests*(ds: Datastore, testLimitsAndOffsets = true, testSortOrder = true) {.dirty.} =
diff --git a/tests/datastore/sql/testsqliteds.nim b/tests/datastore/sql/testsqliteds.nim
index b48b6fe..c78b5c9 100644
--- a/tests/datastore/sql/testsqliteds.nim
+++ b/tests/datastore/sql/testsqliteds.nim
@@ -5,7 +5,6 @@ from std/algorithm import sort, reversed
 
 import pkg/asynctest
 import pkg/chronos
-import pkg/stew/results
 import pkg/stew/byteutils
 
 import pkg/datastore/sql/sqliteds
diff --git a/tests/datastore/testdatastore.nim b/tests/datastore/testdatastore.nim
index 4361eef..5215673 100644
--- a/tests/datastore/testdatastore.nim
+++ b/tests/datastore/testdatastore.nim
@@ -2,7 +2,6 @@ import std/options
 
 import pkg/asynctest/unittest2
 import pkg/chronos
-import pkg/stew/results
 
 import pkg/datastore
 
diff --git a/tests/datastore/testfsds.nim b/tests/datastore/testfsds.nim
index 5791463..9a27173 100644
--- a/tests/datastore/testfsds.nim
+++ b/tests/datastore/testfsds.nim
@@ -5,7 +5,6 @@ from std/algorithm import sort, reversed
 
 import pkg/asynctest
 import pkg/chronos
-import pkg/stew/results
 import pkg/stew/byteutils
 
 import pkg/datastore/fsds
diff --git a/tests/datastore/testkey.nim b/tests/datastore/testkey.nim
index e974a3a..2ed5a85 100644
--- a/tests/datastore/testkey.nim
+++ b/tests/datastore/testkey.nim
@@ -226,9 +226,6 @@ suite "Key":
       key.reverse.field == "a"
 
   test "key root":
-    let
-      key = Key.init("/a:b/c/d:e").tryGet()
-
     check:
       Key.init(":b").tryGet().root
       not Key.init(":b/c").tryGet().root
diff --git a/tests/datastore/testmountedds.nim b/tests/datastore/testmountedds.nim
index 825a473..dc3a616 100644
--- a/tests/datastore/testmountedds.nim
+++ b/tests/datastore/testmountedds.nim
@@ -4,7 +4,6 @@ import std/tables
 
 import pkg/asynctest
 import pkg/chronos
-import pkg/stew/results
 import pkg/stew/byteutils
 
 import pkg/datastore/mountedds
diff --git a/tests/datastore/testtieredds.nim b/tests/datastore/testtieredds.nim
index 1e924aa..aaab065 100644
--- a/tests/datastore/testtieredds.nim
+++ b/tests/datastore/testtieredds.nim
@@ -3,7 +3,6 @@ import std/os
 
 import pkg/asynctest
 import pkg/chronos
-import pkg/stew/results
 import pkg/stew/byteutils
 
 import pkg/datastore/fsds