snakemake - Missing input files for rule all - snakemake

Question

I am trying to create a pipeline that will take a user-configured directory in config.yml (where they have downloaded a project directory of .fastq.gz files from BaseSpace), to run fastqc on sequence files. I already have the downstream steps of merging the fastqs by lane and running fastqc on the merged files.
However, the wildcards are giving me problems running fastqc on the original basespace files. The following is my error when I try running snakemake.
Missing input files for rule all:
qc/fastqc_premerge/DEX-13_S9_L001_ngc1838-10_L001_ds.9fd1f6dff0df47ab821125aab07be69b_r1_fastqc.zip
qc/fastqc_premerge/BOMB-3-2-19D_S8_L002_ngc1838-8_L002_ds.b81c308d62ba447b8caf074ffb27917e_r1_fastqc.zip
qc/fastqc_premerge/DEX-13_S9_L002_ngc1838-10_L002_ds.6369bc71fac44f00931eecb9b0a45d59_r1_fastqc.zip
Any suggestions would be greatly appreciated. Below is minimal code to reproduce this problem.
import glob
configfile: "config.yaml"
wildcard_constraints:
bsdir = '\w+_L\d+_ds.\w+',
lanenum = '\d+'
inputdirectory=config["directory"]
DIRECTORY, SAMPLES, LANENUMS = glob_wildcards(inputdirectory+"/{bsdir}/{sample}_L{lanenum}_R1_001.fastq.gz")
DIRECTORY, SAMPLES, LANENUMS = glob_wildcards(inputdirectory+"/{bsdir}/{sample}_L{lanenum}_R2_001.fastq.gz")
##### target rules #####
rule all:
input:
#expand('qc/fastqc_premerge/{sample}_L{lanenum}_{bsdir}_r1_fastqc.zip', sample=SAMPLES, bsdir=DIRECTORY, lanenum=LANENUMS)
expand('qc/fastqc_premerge/{sample}_L{lanenum}_{bsdir}_r1_fastqc.zip', zip, sample=SAMPLES, bsdir=DIRECTORY, lanenum=LANENUMS) ##Changed to this from commenters suggestion, however, snakemake still wont run
rule fastqc_premerge_r1:
input:
f"{config['directory']}/{{bsdir}}/{{sample}}_L{{lanenum}}_R1_001.fastq.gz"
output:
html="qc/fastqc_premerge/{sample}_L{lanenum}_{bsdir}_r1.html",
zip="qc/fastqc_premerge/{sample}_L{lanenum}_{bsdir}_r1_fastqc.zip" # the suffix _fastqc.zip is necessary for multiqc to find the file. If not using multiqc, you are free to choose an arbitrary filename
params: ""
log:
"logs/fastqc_premerge/{sample}_L{lanenum}_{bsdir}_r1.log"
threads: 1
wrapper:
"v0.69.0/bio/fastqc"
Directory structure:
ngc1838-10_L001_ds.9fd1f6dff0df47ab821125aab07be69b/DEX-13_S9_L001_R1_001.fastq.gz
ngc1838-10_L001_ds.9fd1f6dff0df47ab821125aab07be69b/DEX-13_S9_L001_R2_001.fastq.gz
ngc1838-10_L002_ds.6369bc71fac44f00931eecb9b0a45d59/DEX-13_S9_L002_R1_001.fastq.gz
ngc1838-10_L002_ds.6369bc71fac44f00931eecb9b0a45d59/DEX-13_S9_L002_R2_001.fastq.gz
ngc1838-8_L002_ds.b81c308d62ba447b8caf074ffb27917e/BOMB-3-2-19D_S8_L002_R1_001.fastq.gz
ngc1838-8_L002_ds.b81c308d62ba447b8caf074ffb27917e/BOMB-3-2-19D_S8_L002_R2_001.fastq.gz
In this above case, I would like to run fastqc on all 6 input R1/R2 files, then downstream, create a merged file for DEX_13_S9 (for the two inputs to merge) and BOMB-3_2_19D (which will be a copy of the 1 input). Then create 4 fastqc reports on these resulting R1 and R2 files.
EDIT: I had to change the following to get snakemake to run
inputdirectory=config["directory"]
PROJECTDIR, RANDOMINT, LANENUM1, BSSTRINGS, SAMPLES, LANENUMS = glob_wildcards(inputdirectory+"/{proj}-{randint}_L{lanenum1}_ds.{bsstring}/{sample}_L{lanenum}_R1_001.fastq.gz", followlinks=True)
PROJECTDIR, RANDOMINT, LANENUM1, BSSTRINGS, SAMPLES, LANENUMS = glob_wildcards(inputdirectory+"/{proj}-{randint}_L{lanenum1}_ds.{bsstring}/{sample}_L{lanenum}_R2_001.fastq.gz", followlinks=True)
##### target rules #####
rule all:
input:
"qc/multiqc_report_premerge.html"
rule fastqc_premerge_r1:
input:
f"{config['directory']}/{{proj}}-{{randint}}_L{{lanenum1}}_ds.{{bsstring}}/{{sample}}_L{{lanenum}}_R1_001.fastq.gz"
output:
html="qc/fastqc_premerge/{sample}_L{lanenum}_{proj}-{randint}_L{lanenum1}_ds.{bsstring}_r1.html",
zip="qc/fastqc_premerge/{sample}_L{lanenum}_{proj}-{randint}_L{lanenum1}_ds.{bsstring}_r1_fastqc.zip" # the suffix _fastqc.zip is necessary for multiqc
params: ""
log:
"logs/fastqc_premerge/{sample}_L{lanenum}_{proj}-{randint}_L{lanenum1}_ds.{bsstring}_r1.log"
threads: 1
wrapper:
"v0.69.0/bio/fastqc"
rule fastqc_premerge_r2:
input:
f"{config['directory']}/{{proj}}-{{randint}}_L{{lanenum1}}_ds.{{bsstring}}/{{sample}}_L{{lanenum}}_R2_001.fastq.gz"
output:
html="qc/fastqc_premerge/{sample}_L{lanenum}_{proj}-{randint}_L{lanenum1}_ds.{bsstring}_r2.html",
zip="qc/fastqc_premerge/{sample}_L{lanenum}_{proj}-{randint}_L{lanenum1}_ds.{bsstring}_r2_fastqc.zip" # the suffix _fastqc.zip is necessary for multiqc
params: ""
log:
"logs/fastqc_premerge/{sample}_L{lanenum}_{proj}-{randint}_L{lanenum1}_ds.{bsstring}_r2.log"
threads: 1
wrapper:
"v0.69.0/bio/fastqc"
rule multiqc_pre:
input:
expand("qc/fastqc_premerge/{sample}_L{lanenum}_{proj}-{randint}_L{lanenum1}_ds.{bsstring}_r1_fastqc.zip", zip, sample=SAMPLES, lanenum=LANENUMS, proj=PROJECTDIR, randint=RANDOMINT, lanenum1=LANENUM1, bsstring=BSSTRINGS),
expand("qc/fastqc_premerge/{sample}_L{lanenum}_{proj}-{randint}_L{lanenum1}_ds.{bsstring}_r2_fastqc.zip", zip, sample=SAMPLES, lanenum=LANENUMS, proj=PROJECTDIR, randint=RANDOMINT, lanenum1=LANENUM1, bsstring=BSSTRINGS)
output:
"qc/multiqc_report_premerge.html"
log:
"logs/multiqc_premerge.log"
wrapper:
"0.62.0/bio/multiqc"

Answer 1

In your rule all you have:
expand('qc/fastqc_premerge/{sample}_L{lanenum}_{bsdir}_r1_fastqc.zip', sample=SAMPLES, bsdir=DIRECTORY, lanenum=LANENUMS)
This should generate all combinations of SAMPLES, DIRECTORY, and LANENUMS. Is this what you want? I suspect not since it means that all samples are in all directories and they are on all lanes. Maybe you want the zip function to expand the list:
expand('qc/fastqc_premerge/{sample}_L{lanenum}_{bsdir}_r1_fastqc.zip', zip, sample=SAMPLES, bsdir=DIRECTORY, lanenum=LANENUMS)

Answer 2

It's telling you what files are missing; that's what the lines under "missing input files for rule all" are.
That being said, to answer your original question, if you do a dry run, that should tell you what the input/output files are for each planned rule you want to run (use flags -n -r) in your run command.