diff --git a/lib/galaxy/datatypes/converters/fastq_to_fqtoc.py b/lib/galaxy/datatypes/converters/fastq_to_fqtoc.py
index 5a90201de8f..f6cab4c12fe 100644
--- a/lib/galaxy/datatypes/converters/fastq_to_fqtoc.py
+++ b/lib/galaxy/datatypes/converters/fastq_to_fqtoc.py
@@ -20,30 +20,26 @@ def main():
     """
     input_fname = sys.argv[1]
     if is_gzip(input_fname):
-        print('Conversion is only possible for uncompressed files')
-        sys.exit(1)
-
-    out_file = open(sys.argv[2], 'w')
+        sys.exit('Conversion is only possible for uncompressed files')
 
     current_line = 0
     sequences = 1000000
     lines_per_chunk = 4 * sequences
     chunk_begin = 0
 
-    in_file = open(input_fname)
+    with open(input_fname) as in_file, open(sys.argv[2], 'w') as out_file:
+        out_file.write('{"sections" : [')
 
-    out_file.write('{"sections" : [')
+        for line in in_file:
+            current_line += 1
+            if 0 == current_line % lines_per_chunk:
+                chunk_end = in_file.tell()
+                out_file.write('{"start":"%s","end":"%s","sequences":"%s"},' % (chunk_begin, chunk_end, sequences))
+                chunk_begin = chunk_end
 
-    for line in in_file:
-        current_line += 1
-        if 0 == current_line % lines_per_chunk:
-            chunk_end = in_file.tell()
-            out_file.write('{"start":"%s","end":"%s","sequences":"%s"},' % (chunk_begin, chunk_end, sequences))
-            chunk_begin = chunk_end
-
-    chunk_end = in_file.tell()
-    out_file.write('{"start":"%s","end":"%s","sequences":"%s"}' % (chunk_begin, chunk_end, (current_line % lines_per_chunk) / 4))
-    out_file.write(']}\n')
+        chunk_end = in_file.tell()
+        out_file.write('{"start":"%s","end":"%s","sequences":"%s"}' % (chunk_begin, chunk_end, (current_line % lines_per_chunk) / 4))
+        out_file.write(']}\n')
 
 
 if __name__ == "__main__":
diff --git a/lib/galaxy/datatypes/converters/fastq_to_fqtoc.xml b/lib/galaxy/datatypes/converters/fastq_to_fqtoc.xml
index bd19fc6d117..ca11e91cc4e 100644
--- a/lib/galaxy/datatypes/converters/fastq_to_fqtoc.xml
+++ b/lib/galaxy/datatypes/converters/fastq_to_fqtoc.xml
@@ -1,4 +1,7 @@
-<tool id="CONVERTER_fastq_to_fqtoc0" name="Convert FASTQ files to seek locations" version="1.0.0" hidden="true">
+<tool id="CONVERTER_fastq_to_fqtoc0" name="Convert FASTQ files to seek locations" version="1.0.1" hidden="true" profile="16.04">
+    <requirements>
+        <requirement type="package" version="19.09">galaxy-util</requirement>
+    </requirements>
     <command>python '$__tool_directory__/fastq_to_fqtoc.py' '$input1' '$output1'</command>
     <inputs>
         <param format="fastq" name="input1" type="data" label="Choose FASTQ file"/>
diff --git a/lib/galaxy/datatypes/converters/tar_to_directory.xml b/lib/galaxy/datatypes/converters/tar_to_directory.xml
index 0b8c18c1ded..ba4e21a81b7 100644
--- a/lib/galaxy/datatypes/converters/tar_to_directory.xml
+++ b/lib/galaxy/datatypes/converters/tar_to_directory.xml
@@ -1,5 +1,8 @@
-<tool id="CONVERTER_tar_to_directory" name="Convert tar to directory" version="1.0.0" profile="17.05">
+<tool id="CONVERTER_tar_to_directory" name="Convert tar to directory" version="1.0.1" profile="17.05">
     <!-- Don't use tar directly so we can verify safety of results - tar -xzf '$input1'; -->
+    <requirements>
+        <requirement type="package" version="19.09">galay-util</requirement>
+    </requirements>
     <command>
         mkdir '$output1.files_path';
         cd '$output1.files_path';
diff --git a/lib/galaxy/datatypes/converters/wiggle_to_simple_converter.py b/lib/galaxy/datatypes/converters/wiggle_to_simple_converter.py
index ac965e105ae..b2c3229bc86 100644
--- a/lib/galaxy/datatypes/converters/wiggle_to_simple_converter.py
+++ b/lib/galaxy/datatypes/converters/wiggle_to_simple_converter.py
@@ -11,40 +11,20 @@ import sys
 
 import bx.wiggle
 
-from galaxy.util import unicodify
 from galaxy.util.ucsc import (
     UCSCLimitException,
     UCSCOutWrapper
 )
 
 
-def stop_err(msg):
-    sys.stderr.write(msg)
-    sys.exit(1)
-
-
 def main():
-    if len(sys.argv) > 1:
-        in_file = open(sys.argv[1])
-    else:
-        in_file = open(sys.stdin)
-
-    if len(sys.argv) > 2:
-        out_file = open(sys.argv[2], "w")
-    else:
-        out_file = sys.stdout
-
-    try:
-        for fields in bx.wiggle.IntervalReader(UCSCOutWrapper(in_file)):
-            out_file.write("%s\n" % "\t".join(map(str, fields)))
-    except UCSCLimitException:
-        # Wiggle data was truncated, at the very least need to warn the user.
-        print('Encountered message from UCSC: "Reached output limit of 100000 data values", so be aware your data was truncated.')
-    except ValueError as e:
-        stop_err(unicodify(e))
-    finally:
-        in_file.close()
-        out_file.close()
+    with open(sys.argv[1]) as in_file, open(sys.argv[2], "w") as out_file:
+        try:
+            for fields in bx.wiggle.IntervalReader(UCSCOutWrapper(in_file)):
+                out_file.write("%s\n" % "\t".join(map(str, fields)))
+        except UCSCLimitException:
+            # Wiggle data was truncated, at the very least need to warn the user.
+            sys.stderr.write('Encountered message from UCSC: "Reached output limit of 100000 data values", so be aware your data was truncated.')
 
 
 if __name__ == "__main__":
diff --git a/lib/galaxy/datatypes/converters/wiggle_to_simple_converter.xml b/lib/galaxy/datatypes/converters/wiggle_to_simple_converter.xml
index 0273777e20f..0ed14968083 100644
--- a/lib/galaxy/datatypes/converters/wiggle_to_simple_converter.xml
+++ b/lib/galaxy/datatypes/converters/wiggle_to_simple_converter.xml
@@ -1,6 +1,10 @@
-<tool id="CONVERTER_wiggle_to_interval_0" name="Wiggle to Interval" version="1.0.0">
+<tool id="CONVERTER_wiggle_to_interval_0" name="Wiggle to Interval" version="1.0.1" profile="16.04">
     <!-- <description>__NOT_USED_CURRENTLY_FOR_CONVERTERS__</description> -->
     <!-- Used on the metadata edit page. -->
+    <requirements>
+      <requirement type="package" version="19.09">galaxy-util</requirement>
+      <requirement type="package" version="0.8.6">bx-python</requirement>
+    </requirements>
     <command>python '$__tool_directory__/wiggle_to_simple_converter.py' '$input' '$out_file1'</command>
     <inputs>
         <param format="wig" name="input" type="data" label="Convert"/>
diff --git a/lib/galaxy/datatypes/util/maf_utilities.py b/lib/galaxy/datatypes/util/maf_utilities.py
index 3a5aa531bb2..c013dc215da 100644
--- a/lib/galaxy/datatypes/util/maf_utilities.py
+++ b/lib/galaxy/datatypes/util/maf_utilities.py
@@ -58,8 +58,7 @@ def get_species_in_block(block):
 
 
 def tool_fail(msg="Unknown Error"):
-    print("Fatal Error: %s" % msg, file=sys.stderr)
-    sys.exit()
+    sys.exit("Fatal Error: %s" % msg)
 
 
 class TempFileHandler(object):
@@ -103,11 +102,11 @@ class TempFileHandler(object):
                         else:
                             raise e
                 tmp_file.close()
-                self.files.append(open(filename, 'w+b'))
+                self.files.append(open(filename, 'w'))
             else:
                 while True:
                     try:
-                        self.files[index] = open(self.files[index].name, 'r+b')
+                        self.files[index] = open(self.files[index].name, 'r')
                         break
                     except OSError as e:
                         if self.open_file_indexes and e.errno == EMFILE:
diff --git a/lib/galaxy/tools/__init__.py b/lib/galaxy/tools/__init__.py
index 64c3b059a2a..cf980050fe1 100755
--- a/lib/galaxy/tools/__init__.py
+++ b/lib/galaxy/tools/__init__.py
@@ -127,13 +127,9 @@ GALAXY_LIB_TOOLS_UNVERSIONED = [
     "send_to_cloud",
     "__DATA_FETCH__",
     # Legacy tools bundled with Galaxy.
-    "vcf_to_maf_customtrack1",
     "laj_1",
-    "secure_hash_message_digest",
-    "join1",
     "gff2bed1",
     "gff_filter_by_feature_count",
-    "aggregate_scores_in_intervals2",
     "Interval_Maf_Merged_Fasta2",
     "GeneBed_Maf_Fasta2",
     "maf_stats1",
@@ -146,16 +142,12 @@ GALAXY_LIB_TOOLS_UNVERSIONED = [
     "MAF_split_blocks_by_species1",
     "MAF_Limit_To_Species1",
     "maf_by_block_number1",
-    "wiggle2simple1",
     # Converters
     "CONVERTER_bed_to_fli_0",
-    "CONVERTER_fastq_to_fqtoc0",
     "CONVERTER_gff_to_fli_0",
     "CONVERTER_gff_to_interval_index_0",
     "CONVERTER_maf_to_fasta_0",
     "CONVERTER_maf_to_interval_0",
-    "CONVERTER_wiggle_to_interval_0",
-    "CONVERTER_tar_to_directory",
     # Tools improperly migrated to the tool shed (devteam)
     "qualityFilter",
     "winSplitter",
@@ -189,6 +181,14 @@ GALAXY_LIB_TOOLS_VERSIONED = {
     "PEsortedSAM2readprofile": packaging.version.parse("1.1.1"),
     "sam_to_bam": packaging.version.parse("1.1.3"),
     "sam_pileup": packaging.version.parse("1.1.3"),
+    "vcf_to_maf_customtrack1": packaging.version.parse("1.0.1"),
+    "secure_hash_message_digest": packaging.version.parse("0.0.2"),
+    "join1": packaging.version.parse("2.1.3"),
+    "wiggle2simple1": packaging.version.parse("1.0.1"),
+    "CONVERTER_wiggle_to_interval_0": packaging.version.parse("1.0.1"),
+    "aggregate_scores_in_intervals2": packaging.version.parse("1.1.4"),
+    "CONVERTER_fastq_to_fqtoc0": packaging.version.parse("1.0.1"),
+    "CONVERTER_tar_to_directory": packaging.version.parse("1.0.1"),
 }
 
 
diff --git a/tools/filters/joiner.xml b/tools/filters/joiner.xml
index 642d1e8b429..a1fc30f18bf 100644
--- a/tools/filters/joiner.xml
+++ b/tools/filters/joiner.xml
@@ -1,15 +1,15 @@
-<tool id="join1" name="Join two Datasets" version="2.1.2">
+<tool id="join1" name="Join two Datasets" version="2.1.3">
   <description>side by side on a specified field</description>
   <requirements>
-    <requirement type="package" version="2.7.13">python</requirement>
+    <requirement type="package" version="19.9.0">galaxy-util</requirement>
   </requirements>
   <command detect_errors="aggressive">
     python '$__tool_directory__/join.py' '$input1' '$input2' $field1 $field2 '$out_file1' $unmatched $partial --index_depth=3 --buffer=50000000 --fill_options_file=$fill_options_file $header
   </command>
   <configfiles>
-    <configfile name="fill_options_file">&lt;%
+    <configfile name="fill_options_file"><![CDATA[<%
 import json
-%&gt;
+%>
 #set $__fill_options = {}
 #if $fill_empty_columns['fill_empty_columns_switch'] == 'fill_empty':
     #set $__fill_options['fill_unjoined_only'] = $fill_empty_columns['fill_columns_by'].value == 'fill_unjoined_only'
@@ -30,7 +30,7 @@ import json
     #end if
 #end if
 ${json.dumps( __fill_options )}
-    </configfile>
+    ]]></configfile>
   </configfiles>
   <inputs>
     <param format="tabular" name="input1" type="data" label="Join"/>
@@ -174,7 +174,7 @@ ${json.dumps( __fill_options )}
       <output name="out_file1" file="joiner_out7.tab"/>
     </test>
   </tests>
-  <help>
+  <help><![CDATA
 
 .. class:: warningmark
 
@@ -182,7 +182,7 @@ ${json.dumps( __fill_options )}
 
 .. class:: infomark
 
-**TIP:** If your data is not TAB delimited, use *Text Manipulation-&gt;Convert*
+**TIP:** If your data is not TAB delimited, use *Text Manipulation->Convert*
 
 -----
 
@@ -221,6 +221,6 @@ Joining the 4th column of Dataset1 with the 1st column of Dataset2, while keepin
   chr1 50 80 geneB geneB Foxp2
   chr5 10 40 geneL
 
-</help>
+]]></help>
 <citations></citations>
 </tool>
diff --git a/tools/filters/secure_hash_message_digest.xml b/tools/filters/secure_hash_message_digest.xml
index e20ce80969a..50554c7181d 100644
--- a/tools/filters/secure_hash_message_digest.xml
+++ b/tools/filters/secure_hash_message_digest.xml
@@ -1,6 +1,10 @@
-<tool id="secure_hash_message_digest" name="Secure Hash / Message Digest" version="0.0.1">
+<tool id="secure_hash_message_digest" name="Secure Hash / Message Digest" version="0.0.2" profile="18.01">
     <description>on a dataset</description>
-    <command interpreter="python">secure_hash_message_digest.py --input "${input1}" --output "${out_file1}"
+    <requirements>
+        <requirement type="package" version="3.7">python</requirement>
+    </requirements>
+    <command>
+    python '$__tool_directory__/secure_hash_message_digest.py' --input '${input1}' --output '${out_file1}'
         #if $algorithms.value:
             #for $algorithm in str( $algorithms ).split( "," ):
                 --algorithm "${algorithm}"
diff --git a/tools/filters/wiggle_to_simple.py b/tools/filters/wiggle_to_simple.py
index f1fcf045c8f..d619a8dc3f7 100755
--- a/tools/filters/wiggle_to_simple.py
+++ b/tools/filters/wiggle_to_simple.py
@@ -10,38 +10,20 @@ import sys
 
 import bx.wiggle
 
-from galaxy.util.ucsc import UCSCLimitException, UCSCOutWrapper
-
-
-def stop_err(msg):
-    sys.stderr.write(msg)
-    sys.exit()
+from galaxy.util.ucsc import (
+    UCSCLimitException,
+    UCSCOutWrapper
+)
 
 
 def main():
-    if len(sys.argv) > 1:
-        in_file = open(sys.argv[1])
-    else:
-        in_file = open(sys.stdin)
-
-    if len(sys.argv) > 2:
-        out_file = open(sys.argv[2], "w")
-    else:
-        out_file = sys.stdout
-
-    try:
-        for fields in bx.wiggle.IntervalReader(UCSCOutWrapper(in_file)):
-            out_file.write("%s\n" % "\t".join(map(str, fields)))
-    except UCSCLimitException:
-        # Wiggle data was truncated, at the very least need to warn the user.
-        print('Encountered message from UCSC: "Reached output limit of 100000 data values", so be aware your data was truncated.')
-    except ValueError as e:
-        in_file.close()
-        out_file.close()
-        stop_err(str(e))
-
-    in_file.close()
-    out_file.close()
+    with open(sys.argv[1]) as in_file, open(sys.argv[2], "w") as out_file:
+        try:
+            for fields in bx.wiggle.IntervalReader(UCSCOutWrapper(in_file)):
+                out_file.write("%s\n" % "\t".join(map(str, fields)))
+        except UCSCLimitException:
+            # Wiggle data was truncated, at the very least need to warn the user.
+            sys.stderr.write('Encountered message from UCSC: "Reached output limit of 100000 data values", so be aware your data was truncated.')
 
 
 if __name__ == "__main__":
diff --git a/tools/filters/wiggle_to_simple.xml b/tools/filters/wiggle_to_simple.xml
index 991ce655148..b4362369cae 100644
--- a/tools/filters/wiggle_to_simple.xml
+++ b/tools/filters/wiggle_to_simple.xml
@@ -1,6 +1,10 @@
-<tool id="wiggle2simple1" name="Wiggle-to-Interval" version="1.0.0">
+<tool id="wiggle2simple1" name="Wiggle-to-Interval" version="1.0.1" profile="16.04">
   <description>converter</description>
-  <command interpreter="python">wiggle_to_simple.py $input $out_file1 </command>
+  <requirements>
+    <requirement type="package" version="19.09">galaxy-util</requirement>
+    <requirement type="package" version="0.8.6">bx-python</requirement>
+  </requirements>
+  <command>python '$__tool_directory__/wiggle_to_simple.py' '$input' '$out_file1'</command>
   <inputs>
     <param format="wig" name="input" type="data" label="Convert"/>
   </inputs>
diff --git a/tools/maf/interval_maf_to_merged_fasta.py b/tools/maf/interval_maf_to_merged_fasta.py
index 54ad28a4156..6df4bc88cdf 100644
--- a/tools/maf/interval_maf_to_merged_fasta.py
+++ b/tools/maf/interval_maf_to_merged_fasta.py
@@ -35,8 +35,7 @@ from galaxy.tools.util import maf_utilities
 
 
 def stop_err(msg):
-    sys.stderr.write(msg)
-    sys.exit()
+    sys.exit(msg)
 
 
 def __main__():
diff --git a/tools/maf/vcf_to_maf_customtrack.py b/tools/maf/vcf_to_maf_customtrack.py
index 5c7a2bce376..5b89907c5e1 100644
--- a/tools/maf/vcf_to_maf_customtrack.py
+++ b/tools/maf/vcf_to_maf_customtrack.py
@@ -13,51 +13,43 @@ UNKNOWN_NUCLEOTIDE = '*'
 
 class PopulationVCFParser(Iterator):
     def __init__(self, reader, name):
-        self.reader = reader
+        self.reader = iter(reader)
         self.name = name
         self.counter = 0
 
-    def __next__(self):
-        rval = []
-        vc = next(self.reader)
-        for i, allele in enumerate(vc.alt):
-            rval.append(('%s_%i.%i' % (self.name, i + 1, self.counter + 1), allele))
-        self.counter += 1
-        return (vc, rval)
-
     def __iter__(self):
-        while True:
-            yield next(self)
+        for vc in self.reader:
+            rval = []
+            for i, allele in enumerate(vc.alt):
+                rval.append(('%s_%i.%i' % (self.name, i + 1, self.counter + 1), allele))
+            self.counter += 1
+            yield (vc, rval)
 
 
 class SampleVCFParser(Iterator):
     def __init__(self, reader):
-        self.reader = reader
+        self.reader = iter(reader)
         self.counter = 0
 
-    def __next__(self):
-        rval = []
-        vc = next(self.reader)
-        alleles = [vc.ref] + vc.alt
-
-        if 'GT' in vc.format:
-            gt_index = vc.format.index('GT')
-            for sample_name, sample_value in zip(vc.sample_names, vc.sample_values):
-                gt_indexes = []
-                for i in sample_value[gt_index].replace('|', '/').replace('\\', '/').split('/'):  # Do we need to consider phase here?
-                    try:
-                        gt_indexes.append(int(i))
-                    except Exception:
-                        gt_indexes.append(None)
-                for i, allele_i in enumerate(gt_indexes):
-                    if allele_i is not None:
-                        rval.append(('%s_%i.%i' % (sample_name, i + 1, self.counter + 1), alleles[allele_i]))
-        self.counter += 1
-        return (vc, rval)
-
     def __iter__(self):
-        while True:
-            yield next(self)
+        for vc in self.reader:
+            rval = []
+            alleles = [vc.ref] + vc.alt
+
+            if 'GT' in vc.format:
+                gt_index = vc.format.index('GT')
+                for sample_name, sample_value in zip(vc.sample_names, vc.sample_values):
+                    gt_indexes = []
+                    for i in sample_value[gt_index].replace('|', '/').replace('\\', '/').split('/'):  # Do we need to consider phase here?
+                        try:
+                            gt_indexes.append(int(i))
+                        except Exception:
+                            gt_indexes.append(None)
+                    for i, allele_i in enumerate(gt_indexes):
+                        if allele_i is not None:
+                            rval.append(('%s_%i.%i' % (sample_name, i + 1, self.counter + 1), alleles[allele_i]))
+            self.counter += 1
+            yield (vc, rval)
 
 
 def main():
@@ -77,7 +69,7 @@ def main():
     if not (options.population ^ options.sample):
         parser.error('You must specify either a per population conversion or a per sample conversion, but not both')
 
-    out = open(args.pop(0), 'wb')
+    out = open(args.pop(0), 'w')
     out.write('track name="%s" visibility=pack\n' % options.name.replace("\"", "'"))
 
     maf_writer = bx.align.maf.Writer(out)
diff --git a/tools/maf/vcf_to_maf_customtrack.xml b/tools/maf/vcf_to_maf_customtrack.xml
index c10618ac41e..39b97ebe761 100644
--- a/tools/maf/vcf_to_maf_customtrack.xml
+++ b/tools/maf/vcf_to_maf_customtrack.xml
@@ -1,5 +1,9 @@
-<tool id="vcf_to_maf_customtrack1" name="VCF to MAF Custom Track" version="1.0.0">
+<tool id="vcf_to_maf_customtrack1" name="VCF to MAF Custom Track" version="1.0.1" profile="18.01">
   <description>for display at UCSC</description>
+  <requirements>
+    <requirement type="package" version="1.1.4">galaxy_sequence_utils</requirement>
+    <requirement type="package" version="0.8.6">bx-python</requirement>
+  </requirements>
   <macros>
       <import>macros.xml</import>
   </macros>
@@ -43,21 +47,21 @@ ${vcf_source_type.vcf_source} -n '$track_name'
   <outputs>
     <data format="mafcustomtrack" name="out_file1" />
   </outputs>
-<!--  <tests>
+  <tests>
     <test>
       <param name="track_name" value="Galaxy Custom Track"/>
-      <param name="vcf_source" value="Per Population"/>
+      <param name="vcf_source" value="-p"/>
       <param name="vcf_input" value="vcf_to_maf_in.vcf" ftype="tabular"/>
       <param name="population_name" value=""/>
       <output name="out_file1" file="vcf_to_maf_population_out.mafcustomtrack"/>
     </test>
     <test>
       <param name="track_name" value="Galaxy Custom Track"/>
-      <param name="vcf_source" value="Per Sample"/>
+      <param name="vcf_source" value="-s"/>
       <param name="vcf_input" value="vcf_to_maf_in.vcf" ftype="tabular"/>
       <output name="out_file1" file="vcf_to_maf_sample_out.mafcustomtrack"/>
     </test>
-  </tests> -->
+  </tests>
   <help>
 **What it does**
 
diff --git a/tools/stats/aggregate_binned_scores_in_intervals.xml b/tools/stats/aggregate_binned_scores_in_intervals.xml
index 7e204c8ef67..fa8e1d111d8 100644
--- a/tools/stats/aggregate_binned_scores_in_intervals.xml
+++ b/tools/stats/aggregate_binned_scores_in_intervals.xml
@@ -1,5 +1,9 @@
-<tool id="aggregate_scores_in_intervals2" name="Aggregate datapoints" version="1.1.3">
+<tool id="aggregate_scores_in_intervals2" name="Aggregate datapoints" version="1.1.4" profile="16.04">
   <description>Appends the average, min, max of datapoints per interval</description>
+  <requirements>
+    <requirement type="package" version="19.09">galaxy-util</requirement>
+    <requirement type="package" version="0.8.6">bx-python</requirement>
+  </requirements>
   <command>
 python '$__tool_directory__/aggregate_scores_in_intervals.py'
 #if $score_source_type.score_source == "user"
diff --git a/tools/stats/aggregate_scores_in_intervals.py b/tools/stats/aggregate_scores_in_intervals.py
index 9c0cceba15b..2c5e8d7ad45 100755
--- a/tools/stats/aggregate_scores_in_intervals.py
+++ b/tools/stats/aggregate_scores_in_intervals.py
@@ -99,8 +99,7 @@ class FileBinnedArrayDir(Mapping):
 
 
 def stop_err(msg):
-    sys.stderr.write(msg)
-    sys.exit()
+    sys.exit(msg)
 
 
 def load_scores_wiggle(fname, chrom_buffer_size=3):